diff --git a/bin/gltf-inspect.rs b/bin/gltf-inspect.rs
index 64ca5b3..bfd224f 100644
--- a/bin/gltf-inspect.rs
+++ b/bin/gltf-inspect.rs
@@ -1,4 +1,4 @@
-use bevy::{asset::AssetEvents, gltf::Gltf, prelude::*, utils::HashMap};
+use bevy::{gltf::Gltf, prelude::*, utils::HashMap};
 use monologue_trees::debug::*;
 
 fn main() {
@@ -18,6 +18,7 @@ fn main() {
         .add_event::<SpawnScene>()
         .init_resource::<Current>()
         .add_systems(Startup, spawn_ui)
+        .add_systems(PreUpdate, (add_camera_ui, add_scene_ui, add_animation_ui))
         .add_systems(
             Update,
             (
@@ -25,13 +26,19 @@ fn main() {
                 loading,
                 reset_scene.before(spawn_scene),
                 spawn_scene.after(reset_scene),
-                wire_up_scenes,
                 control_scene,
-                wire_up_animations,
                 control_animation,
-                wire_up_cameras,
                 control_camera,
                 control_default_camera,
+                control_default_light,
+            ),
+        )
+        .add_systems(
+            PostUpdate,
+            (
+                clean_ui::<SceneButton>,
+                clean_ui::<AnimationButton>,
+                clean_ui::<CameraButton>,
             ),
         )
         .run();
@@ -41,7 +48,10 @@ fn main() {
 struct SceneMarker;
 
 #[derive(Component)]
-struct MainCamera;
+struct DefaultCamera;
+
+#[derive(Component)]
+struct DefaultLight;
 
 #[derive(Component)]
 struct MainUi;
@@ -58,6 +68,9 @@ struct SceneSelectUi;
 #[derive(Component, PartialEq, Debug)]
 struct SceneButton(Handle<Scene>);
 
+#[derive(Event)]
+struct SpawnScene(Handle<Scene>);
+
 #[derive(Component)]
 struct AnimationSelectUi;
 
@@ -80,8 +93,8 @@ struct Current {
 #[derive(Event)]
 struct ResetScene;
 
-#[derive(Event)]
-struct SpawnScene(Handle<Scene>);
+#[derive(Component)]
+struct ResetAnimation;
 
 fn drag_and_drop(
     mut events: EventReader<FileDragAndDrop>,
@@ -90,13 +103,9 @@ fn drag_and_drop(
 ) {
     events
         .iter()
-        .filter_map(|event| {
-            if let FileDragAndDrop::DroppedFile { path_buf, .. } = event {
-                info!("Drag+Drop file: {:?}", path_buf);
-                Some(path_buf)
-            } else {
-                None
-            }
+        .filter_map(|event| match event {
+            FileDragAndDrop::DroppedFile { path_buf, .. } => Some(path_buf),
+            _ => None,
         })
         .map(|path_buf| server.load(path_buf.to_str().expect("PathBuf to str")))
         .for_each(|handle| current.gltf = handle.clone());
@@ -107,9 +116,19 @@ fn spawn_ui(mut commands: Commands) {
     // TODO: Scene select container
     // TODO: Animation Play/Pause Placeholder
     commands.spawn((
-        Camera3dBundle { ..default() },
+        Camera3dBundle {
+            transform: Transform::from_xyz(5.0, 5.0, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
+            ..default()
+        },
         UiCameraConfig { show_ui: true },
-        MainCamera,
+        DefaultCamera,
+    ));
+    commands.spawn((
+        DirectionalLightBundle {
+            transform: Transform::default().looking_at(Vec3::new(1.0, -1.0, -1.0), Vec3::Y),
+            ..default()
+        },
+        DefaultLight,
     ));
     commands
         .spawn((
@@ -127,23 +146,46 @@ fn spawn_ui(mut commands: Commands) {
             MainUi,
         ))
         .with_children(|parent| {
-            // TOOD: Prompt to drag+drop Gltf/Gltf file
-            parent.spawn((
-                TextBundle {
-                    text: Text {
-                        sections: vec![TextSection {
-                            value: String::from("Drag and Drop .gltf/.glb file"),
-                            style: TextStyle {
-                                color: Color::WHITE,
-                                ..default()
-                            },
-                        }],
+            parent
+                .spawn(NodeBundle {
+                    style: Style {
+                        flex_direction: FlexDirection::Column,
                         ..default()
                     },
                     ..default()
-                },
-                InstructionsUi,
-            ));
+                })
+                .with_children(|parent| {
+                    parent.spawn((
+                        TextBundle::from_section(
+                            "Drag and Drop .gltf/.glb file",
+                            TextStyle {
+                                color: Color::WHITE,
+                                ..default()
+                            },
+                        ),
+                        InstructionsUi,
+                    ));
+                    parent.spawn((
+                        TextBundle::from_section(
+                            "Using default camera",
+                            TextStyle {
+                                color: Color::WHITE,
+                                ..default()
+                            },
+                        ),
+                        DefaultCamera,
+                    ));
+                    parent.spawn((
+                        TextBundle::from_section(
+                            "Using default light",
+                            TextStyle {
+                                color: Color::WHITE,
+                                ..default()
+                            },
+                        ),
+                        DefaultLight,
+                    ));
+                });
             parent
                 .spawn((
                     NodeBundle {
@@ -170,11 +212,11 @@ fn spawn_ui(mut commands: Commands) {
                         },
                         ..default()
                     },
-                    AnimationSelectUi,
+                    CameraSelectUi,
                 ))
                 .with_children(|parent| {
                     parent.spawn((
-                        TextBundle::from_section("Animations", TextStyle { ..default() }),
+                        TextBundle::from_section("Cameras", TextStyle { ..default() }),
                         UiTitle,
                     ));
                 });
@@ -187,91 +229,35 @@ fn spawn_ui(mut commands: Commands) {
                         },
                         ..default()
                     },
-                    CameraSelectUi,
+                    AnimationSelectUi,
                 ))
                 .with_children(|parent| {
                     parent.spawn((
-                        TextBundle::from_section("Cameras", TextStyle { ..default() }),
+                        TextBundle::from_section("Animations", TextStyle { ..default() }),
                         UiTitle,
                     ));
                 });
         });
 }
 
-fn wire_up_scenes(
-    mut events: EventReader<AssetEvent<Scene>>,
-    root: Query<Entity, With<SceneSelectUi>>,
-    root_children: Query<&Children, With<SceneSelectUi>>,
+/// When a new camera is loaded, clear the camera buttons
+fn clean_ui<T: Component>(
+    mut spawn_events: EventReader<SpawnScene>,
+    mut clear_events: EventReader<ResetScene>,
+    cameras: Query<Entity, With<T>>,
     mut commands: Commands,
-    gltfs: Res<Assets<Gltf>>,
-    current: Res<Current>,
-    existing: Query<&SceneButton, Without<UiTitle>>,
 ) {
-    events.iter().for_each(|event| {
-        // Cleanup unused buttons
-        root_children.iter().for_each(|children| {
-            // Iterate over UI children elements
-            children
-                .iter()
-                // Filter to just the buttons we want to despawn
-                .filter(|&child| {
-                    // Check each child entity against the currently loaded scenes
-                    // Note: !(_.any(...)) (not-any)
-                    !((*current).scenes.iter().any(|(_, handle)| {
-                        // If the current entitie's scene button corresponds to one of the scenes
-                        // loaded, continue, otherwise
-                        existing.get(*child).map_or(false, |scene_button| {
-                            *scene_button == SceneButton(handle.cast_weak::<Scene>())
-                        })
-                    }))
-                })
-                .for_each(|&e| {
-                    commands.entity(e).despawn_recursive();
-                });
+    // We don't care about the content of these events, just that we want to clear the UI after
+    // each spawn or reset event, so we map each event to () and chain the two event streams.
+    spawn_events
+        .iter()
+        .map(|_| ())
+        .chain(clear_events.iter().map(|_| ()))
+        .for_each(|_| {
+            cameras.iter().for_each(|entity| {
+                commands.entity(entity).despawn_recursive();
+            });
         });
-
-        // Add buttons
-        match event {
-            AssetEvent::Created { handle } | AssetEvent::Modified { handle } => {
-                let (name, _) = gltfs
-                    .get(&current.gltf)
-                    .expect("Load current gltf")
-                    .named_scenes
-                    .iter()
-                    .find(|(_, h)| h == &handle)
-                    .expect("Find this scene");
-
-                let mut ui = commands.entity(root.single());
-
-                ui.with_children(|parent| {
-                    parent
-                        .spawn((
-                            ButtonBundle {
-                                background_color: BackgroundColor(Color::NONE),
-                                ..default()
-                            },
-                            SceneButton(handle.clone()),
-                        ))
-                        .with_children(|parent| {
-                            parent.spawn(TextBundle {
-                                text: Text {
-                                    sections: vec![TextSection {
-                                        value: name.clone(),
-                                        style: TextStyle {
-                                            color: Color::WHITE,
-                                            ..default()
-                                        },
-                                    }],
-                                    ..default()
-                                },
-                                ..default()
-                            });
-                        });
-                });
-            }
-            AssetEvent::Removed { .. } => warn!("IGNORED Remove scene in list"),
-        }
-    });
 }
 
 /// Translate UI button presses into scene spawn events
@@ -288,150 +274,88 @@ fn control_scene(
         });
 }
 
-fn wire_up_animations(
-    mut events: EventReader<AssetEvent<AnimationClip>>,
-    root: Query<Entity, With<AnimationSelectUi>>,
-    root_children: Query<&Children, With<AnimationSelectUi>>,
-    mut commands: Commands,
-    gltfs: Res<Assets<Gltf>>,
+/// Add scene buttons when a new scene is added/gltf is loaded
+fn add_scene_ui(
+    mut events: EventReader<SpawnScene>,
     current: Res<Current>,
-    existing: Query<&AnimationButton, Without<UiTitle>>,
+    root: Query<Entity, With<SceneSelectUi>>,
+    mut commands: Commands,
 ) {
-    events.iter().for_each(|event| {
-        // Cleanup unused buttons
-        root_children.iter().for_each(|children| {
-            // Iterate over UI children elements
-            children
-                .iter()
-                // Filter to just the buttons we want to despawn
-                .filter(|&child| {
-                    // Check each child entity against the currently loaded animations
-                    // Note: !(_.any(...)) (not-any)
-                    !((*current).animations.iter().any(|(_, handle)| {
-                        // If the current entitie's animation button corresponds to one of
-                        // the animations loaded, continue, otherwise
-                        existing.get(*child).map_or(false, |scene_button| {
-                            *scene_button == AnimationButton(handle.cast_weak::<AnimationClip>())
-                        })
-                    }))
-                })
-                .for_each(|&e| {
-                    commands.entity(e).despawn_recursive();
-                });
+    events.iter().for_each(|_| {
+        commands.entity(root.single()).with_children(|parent| {
+            current.scenes.iter().for_each(|(name, handle)| {
+                parent
+                    .spawn((
+                        ButtonBundle {
+                            background_color: BackgroundColor(Color::NONE),
+                            ..default()
+                        },
+                        SceneButton(handle.clone()),
+                    ))
+                    .with_children(|parent| {
+                        parent.spawn(TextBundle::from_section(name, TextStyle { ..default() }));
+                    });
+            });
         });
-        match event {
-            AssetEvent::Created { handle } | AssetEvent::Modified { handle } => {
-                let (name, _) = gltfs
-                    .get(&current.gltf)
-                    .expect("Load current gltf")
-                    .named_animations
-                    .iter()
-                    .find(|(_, h)| h == &handle)
-                    .expect("Find this animation");
-
-                commands.entity(root.single()).with_children(|parent| {
-                    parent
-                        .spawn((
-                            ButtonBundle {
-                                background_color: BackgroundColor(Color::NONE),
-                                ..default()
-                            },
-                            AnimationButton(handle.clone()),
-                        ))
-                        .with_children(|parent| {
-                            parent.spawn(TextBundle {
-                                text: Text {
-                                    sections: vec![TextSection {
-                                        value: name.clone(),
-                                        style: TextStyle {
-                                            color: Color::WHITE,
-                                            ..default()
-                                        },
-                                    }],
-                                    ..default()
-                                },
-                                ..default()
-                            });
-                        });
-                });
-            }
-            AssetEvent::Removed { .. } => warn!("Ignoring asset removal"),
-        }
     });
 }
 
 fn control_animation(
     interactions: Query<(&Interaction, &AnimationButton), (Changed<Interaction>, With<Button>)>,
+    mut players: Query<(&mut AnimationPlayer, &Name)>,
+    clips: Res<Assets<AnimationClip>>,
 ) {
+    // For each button interaction
     interactions
         .iter()
         .for_each(|(interaction, AnimationButton(handle))| match interaction {
-            Interaction::Pressed => {
-                info!("TODO: Play animation {:?}", handle);
-            }
+            // If this is a butotn press
+            Interaction::Pressed => players
+                .iter_mut()
+                // Find all entities compatible with this animation
+                .filter(|(_, name)| {
+                    clips
+                        .get(handle)
+                        .expect("Check animation clip compatability")
+                        .compatible_with(name)
+                })
+                // Play the given (checked compatible) animation
+                .for_each(|(mut player, _)| {
+                    player.play(handle.clone()).repeat();
+                }),
             _ => (),
         })
 }
 
-/// Wire up the camera UI
-fn wire_up_cameras(
-    added_cam: Query<(Entity, &Name), (Without<MainCamera>, Added<Camera>)>,
-    mut removed_cam: RemovedComponents<Camera>,
+/// Add animation buttons when a new animation is added/gltf is loaded
+fn add_animation_ui(
+    mut events: EventReader<SpawnScene>,
+    current: Res<Current>,
+    root: Query<Entity, With<AnimationSelectUi>>,
     mut commands: Commands,
-    root: Query<Entity, With<CameraSelectUi>>,
-    root_children: Query<&Children, With<CameraSelectUi>>,
-    existing: Query<&CameraButton, Without<UiTitle>>,
 ) {
-    // Add new camera buttons
-    added_cam.iter().for_each(|(entity, name)| {
-        info!("Adding camera button");
+    events.iter().for_each(|_| {
         commands.entity(root.single()).with_children(|parent| {
-            parent
-                .spawn((
-                    ButtonBundle {
-                        background_color: BackgroundColor(Color::NONE),
-                        ..default()
-                    },
-                    CameraButton(entity),
-                ))
-                .with_children(|parent| {
-                    parent.spawn(TextBundle {
-                        text: Text {
-                            sections: vec![TextSection {
-                                value: name.as_str().into(),
-                                style: TextStyle {
-                                    color: Color::WHITE,
-                                    ..default()
-                                },
-                            }],
+            current.animations.iter().for_each(|(name, handle)| {
+                parent
+                    .spawn((
+                        ButtonBundle {
+                            background_color: BackgroundColor(Color::NONE),
                             ..default()
                         },
-                        ..default()
+                        AnimationButton(handle.clone()),
+                    ))
+                    .with_children(|parent| {
+                        parent.spawn(TextBundle::from_section(name, TextStyle { ..default() }));
                     });
-                });
+            });
         });
     });
-
-    // Remove deleted cameras
-    removed_cam.iter().for_each(|entity| {
-        info!("Removing camera button");
-        root_children
-            .single()
-            .iter()
-            .filter(|&child| {
-                if let Ok(button) = existing.get(*child) {
-                    *button == CameraButton(entity)
-                } else {
-                    false
-                }
-            })
-            .for_each(|child| commands.entity(*child).despawn_recursive());
-    })
 }
 
 fn control_camera(
     interactions: Query<(&Interaction, &CameraButton), (Changed<Interaction>, With<Button>)>,
-    mut cameras: Query<(Entity, &mut Camera), Without<MainCamera>>,
+    mut cameras: Query<(Entity, &mut Camera), Without<DefaultCamera>>,
 ) {
     interactions
         .iter()
@@ -443,12 +367,70 @@ fn control_camera(
         })
 }
 
+/// If there are no other cameras, use default camera
 fn control_default_camera(
-    mut main_camera: Query<&mut Camera, With<MainCamera>>,
-    other_cameras: Query<&mut Camera, Without<MainCamera>>,
+    mut main_camera: Query<&mut Camera, With<DefaultCamera>>,
+    other_cameras: Query<Entity, (With<Camera>, Without<DefaultCamera>)>,
+    mut text_indicators: Query<&mut Visibility, With<DefaultCamera>>,
 ) {
-    // PERF: Probably don't need to do this every frame
-    main_camera.single_mut().is_active = other_cameras.is_empty();
+    // Figure out if we should use default camera
+    let state = other_cameras.is_empty();
+
+    // Toggle camera
+    main_camera
+        .iter_mut()
+        .for_each(|mut cam| cam.is_active = state);
+
+    // Update UI indicator
+    text_indicators.iter_mut().for_each(|mut vis| {
+        *vis = match state {
+            true => Visibility::Visible,
+            false => Visibility::Hidden,
+        }
+    })
+}
+
+/// If there are no other lights, use default light
+fn control_default_light(
+    mut toggle: Query<&mut Visibility, With<DefaultLight>>,
+    other_lights: Query<
+        Entity,
+        (
+            Or<(With<SpotLight>, With<DirectionalLight>, With<PointLight>)>,
+            Without<DefaultLight>,
+        ),
+    >,
+) {
+    toggle.iter_mut().for_each(|mut vis| {
+        *vis = if other_lights.is_empty() {
+            Visibility::Visible
+        } else {
+            Visibility::Hidden
+        }
+    });
+}
+
+/// Add camera buttons when a new camera is added/gltf is loaded
+fn add_camera_ui(
+    events: Query<(Entity, &Name), Added<Camera>>,
+    ui_root: Query<Entity, With<CameraSelectUi>>,
+    mut commands: Commands,
+) {
+    events.iter().for_each(|(entity, name)| {
+        commands.entity(ui_root.single()).with_children(|parent| {
+            parent
+                .spawn((
+                    ButtonBundle {
+                        background_color: BackgroundColor(Color::NONE),
+                        ..default()
+                    },
+                    CameraButton(entity),
+                ))
+                .with_children(|parent| {
+                    parent.spawn(TextBundle::from_section(name, TextStyle { ..default() }));
+                });
+        });
+    })
 }
 
 /// Load gltfs and spawn default scene
@@ -459,21 +441,19 @@ fn loading(
     mut current: ResMut<Current>,
 ) {
     events.iter().for_each(|event| {
-        info!("Event!: {:?}", event);
-        if let AssetEvent::<Gltf>::Created { handle, .. } = event {
-            // Despawn existing scene
-            let gltf = gltfs.get(handle).expect("Loaded Gltf");
-            let default_scene = gltf.default_scene.clone().expect("Default scene");
-            spawn.send(SpawnScene(default_scene));
-
-            // Save active scenes
-            current.scenes = gltf.named_scenes.clone();
-            current.animations = gltf.named_animations.clone();
-
-            // TOOD: Spawn default camera
-            // TODO: Handle multiple cameras
-            // TODO: Scene Selection scenes in one Gltf
-            // TODO: Handle animation
+        match event {
+            AssetEvent::Created { handle } | AssetEvent::Modified { handle } => {
+                let gltf = gltfs.get(handle).expect("Loaded Gltf");
+
+                // Save active scenes
+                current.scenes = gltf.named_scenes.clone();
+                current.animations = gltf.named_animations.clone();
+
+                // Despawn existing scene
+                let default_scene = gltf.default_scene.clone().expect("Default scene");
+                spawn.send(SpawnScene(default_scene));
+            }
+            AssetEvent::Removed { .. } => warn!("Ignoring asset removal"),
         }
     });
 }