diff --git a/headers/enduro2d/high/components/spine_player.hpp b/headers/enduro2d/high/components/spine_player.hpp
index 1854df76..ae2a15a9 100644
--- a/headers/enduro2d/high/components/spine_player.hpp
+++ b/headers/enduro2d/high/components/spine_player.hpp
@@ -22,9 +22,13 @@ namespace e2d
         spine_player() = default;
         spine_player(const spine_model_asset::ptr& model);
         
-        spine_player& set_animation(u32 track, const str& name, bool loop);
-        spine_player& add_animation(u32 track, const str& name, bool loop, secf delay);
-        spine_player& add_empty_animation(u32 track, secf duration, secf delay);
+        spine_player& set_animation(u32 track, const str& name, bool loop = false);
+
+        spine_player& add_animation(u32 track, const str& name, bool loop, secf delay = secf(0.0f));
+        spine_player& add_animation(u32 track, const str& name, secf delay = secf(0.0f));
+
+        spine_player& add_empty_animation(u32 track, secf duration, secf delay = secf(0.0f));
+
         spine_player& clear(u32 track);
         spine_player& clear();
         
diff --git a/samples/bin/library/spine_raptor.json b/samples/bin/library/spine_raptor.json
index daf58174..93f11198 100644
--- a/samples/bin/library/spine_raptor.json
+++ b/samples/bin/library/spine_raptor.json
@@ -1,6 +1,38 @@
 {
-    "skeleton" : "raptor/raptor-pro.json-large",
-    "atlas" : "raptor/raptor.atlas",
-    "scale" : 1.0,
-    "premultiplied_alpha" : false
-}
\ No newline at end of file
+    "skeleton": "raptor/raptor-pro.json-large",
+    "atlas": "raptor/raptor.atlas",
+    "scale": 1.0,
+    "premultiplied_alpha": false,
+    "mix_animations": [
+        {
+            "from_anim": "walk",
+            "to_anim": "roar",
+            "duration": 0.5
+        },
+        {
+            "from_anim": "roar",
+            "to_anim": "walk",
+            "duration": 0.5
+        },
+        {
+            "from_anim": "walk",
+            "to_anim": "jump",
+            "duration": 0.5
+        },
+        {
+            "from_anim": "jump",
+            "to_anim": "walk",
+            "duration": 0.5
+        },
+        {
+            "from_anim": "roar",
+            "to_anim": "jump",
+            "duration": 0.5
+        },
+        {
+            "from_anim": "jump",
+            "to_anim": "roar",
+            "duration": 0.5
+        }
+    ]
+}
diff --git a/samples/sources/sample_07/sample_07.cpp b/samples/sources/sample_07/sample_07.cpp
index c84df02f..7cffc429 100644
--- a/samples/sources/sample_07/sample_07.cpp
+++ b/samples/sources/sample_07/sample_07.cpp
@@ -11,6 +11,11 @@ namespace
 {
     class game_system final : public ecs::system {
     public:
+        game_system(gobject_iptr raptor)
+        : raptor_gobj_(raptor) {}
+
+        ~game_system() noexcept override {}
+
         void process(ecs::registry& owner) override {
             E2D_UNUSED(owner);
             const keyboard& k = the<input>().keyboard();
@@ -26,7 +31,35 @@ namespace
             if ( k.is_key_pressed(keyboard_key::lsuper) && k.is_key_just_released(keyboard_key::enter) ) {
                 the<window>().toggle_fullscreen(!the<window>().fullscreen());
             }
+            
+            // use keys R, J, G to start animations
+            if ( raptor_gobj_ ) {
+                if ( k.is_key_just_pressed(keyboard_key::r) ) {
+                    auto player = raptor_gobj_->get_component<spine_player>();
+                    if ( player ) {
+                        (*player).set_animation(0, "roar")
+                            .add_animation(0, "walk", true);
+                    }
+                }
+                if ( k.is_key_just_pressed(keyboard_key::j) ) {
+                    auto player = raptor_gobj_->get_component<spine_player>();
+                    if ( player ) {
+                        (*player).set_animation(0, "jump")
+                            .add_animation(0, "walk", true);
+                    }
+                }
+                if ( k.is_key_just_pressed(keyboard_key::g) ) {
+                    auto player = raptor_gobj_->get_component<spine_player>();
+                    if ( player ) {
+                        (*player).set_animation(1, "gun-grab")
+                            .add_animation(1, "gun-holster", secf(3.0f));
+                    }
+                }
+            }
         }
+
+    private:
+        gobject_iptr raptor_gobj_;
     };
     
     class camera_system final : public ecs::system {
@@ -69,7 +102,6 @@ namespace
 
             node_iptr scene_r = scene_i->get_component<actor>().get().node();
             
-        #if 1
             auto coin_i = the<world>().instantiate();
             coin_i->entity_filler()
                 .component<actor>(node::create(coin_i, scene_r))
@@ -80,42 +112,22 @@ namespace
                     .set_animation(0, "animation", true));
             
             node_iptr coin_n = coin_i->get_component<actor>().get().node();
-            coin_n->scale(v3f(0.5f));
-            coin_n->translation(v3f{150.0f, 0.0f, 0.0f});
+            coin_n->scale(v3f(0.125f));
+            coin_n->translation(v3f{200.0f, 200.0f, 0.0f});
 
-            auto raptor_i = the<world>().instantiate();
-            raptor_i->entity_filler()
-                .component<actor>(node::create(raptor_i, scene_r))
+            raptor_gobj_ = the<world>().instantiate();
+            raptor_gobj_->entity_filler()
+                .component<actor>(node::create(raptor_gobj_, scene_r))
                 .component<renderer>(renderer()
                     .materials({spine_mat}))
                 .component<spine_renderer>(spine_renderer(spine_raptor))
                 .component<spine_player>(spine_player(spine_raptor)
-                    .set_animation(0, "walk", true)
-                    .add_animation(1, "gun-grab", false, secf(2.0f)));
+                    .set_animation(0, "walk", true));
             
-            node_iptr raptor_n = raptor_i->get_component<actor>().get().node();
+            node_iptr raptor_n = raptor_gobj_->get_component<actor>().get().node();
             raptor_n->scale(v3f(0.25f));
-            raptor_n->translation(v3f{-170.f, -100.f, 0.0f});
+            raptor_n->translation(v3f{-80.f, -100.f, 0.0f});
 
-        #else
-            // performace test
-            for ( std::size_t i = 0; i < 20; ++i )
-            for ( std::size_t j = 0; j < 40; ++j ) {
-                auto spine_i = the<world>().instantiate();
-                spine_i->entity_filler()
-                    .component<actor>(node::create(spine_i, scene_r))
-                    .component<renderer>(renderer()
-                        .materials({spine_mat}))
-                    .component<spine_renderer>(spine_renderer(spine_raptor))
-                    .component<spine_player>(spine_player(spine_raptor)
-                        .set_animation(0, "walk", true)
-                        .add_animation(1, "gun-grab", false, secf(2.0f)));
-            
-                node_iptr spine_n = spine_i->get_component<actor>().get().node();
-                spine_n->scale(v3f(0.05f));
-                spine_n->translation(v3f{-400.f, -300.f, 0.0f} + v3f{j * 30.f, i * 30.f, 0});
-            }
-        #endif
             return true;
         }
 
@@ -130,11 +142,14 @@ namespace
 
         bool create_systems() {
             ecs::registry_filler(the<world>().registry())
-                .system<game_system>(world::priority_update)
+                .system<game_system>(world::priority_update, raptor_gobj_)
                 .system<camera_system>(world::priority_pre_render)
                 .system<spine_system>(world::priority_update);
             return true;
         }
+
+    private:
+        gobject_iptr raptor_gobj_;
     };
 }
 
diff --git a/sources/enduro2d/high/assets/spine_model_asset.cpp b/sources/enduro2d/high/assets/spine_model_asset.cpp
index 178f4a28..e1bfb2f7 100644
--- a/sources/enduro2d/high/assets/spine_model_asset.cpp
+++ b/sources/enduro2d/high/assets/spine_model_asset.cpp
@@ -32,10 +32,7 @@ namespace
             "scale" : { "type" : "number" },
             "atlas" : { "$ref" : "#/common_definitions/address" },
             "premultiplied_alpha" : { "type" : "boolean" },
-            "mix_animations" : {
-                "type" : "array",
-                "items" : { "$ref": "#/definitions/spine_animation_mix_array" }
-            }
+            "mix_animations" : { "$ref": "#/definitions/spine_animation_mix_array" }
         },
         "definitions" : {
             "spine_animation_mix_array" : {
diff --git a/sources/enduro2d/high/components/spine_player.cpp b/sources/enduro2d/high/components/spine_player.cpp
index 7c7f9bc3..157232c9 100644
--- a/sources/enduro2d/high/components/spine_player.cpp
+++ b/sources/enduro2d/high/components/spine_player.cpp
@@ -41,6 +41,10 @@ namespace e2d
         return *this;
     }
 
+    spine_player& spine_player::add_animation(u32 track, const str& name, secf delay) {
+        return add_animation(track, name, false, delay);
+    }
+
     spine_player& spine_player::add_animation(u32 track, const str& name, bool loop, secf delay) {
         E2D_ASSERT(model_ && animation_);
         E2D_ASSERT(track < max_track_count);
diff --git a/sources/enduro2d/high/spine_model.cpp b/sources/enduro2d/high/spine_model.cpp
index c78b54aa..e1f28b66 100644
--- a/sources/enduro2d/high/spine_model.cpp
+++ b/sources/enduro2d/high/spine_model.cpp
@@ -80,8 +80,11 @@ namespace e2d
 
     spine_model& spine_model::mix_animations(const str& from, const str& to, secf duration) {
         E2D_ASSERT(animation_);
-       spAnimationStateData_setMixByName(animation_.get(), from.c_str(), to.c_str(), duration.value);
-       return *this;
+        E2D_ASSERT(spSkeletonData_findAnimation(animation_->skeletonData, from.c_str()));
+        E2D_ASSERT(spSkeletonData_findAnimation(animation_->skeletonData, to.c_str()));
+
+        spAnimationStateData_setMixByName(animation_.get(), from.c_str(), to.c_str(), duration.value);
+        return *this;
     }
 
     const spine_model::atlas_ptr& spine_model::atlas() const noexcept {
diff --git a/sources/enduro2d/high/systems/spine_system.cpp b/sources/enduro2d/high/systems/spine_system.cpp
index 88a480c4..deaa31e6 100644
--- a/sources/enduro2d/high/systems/spine_system.cpp
+++ b/sources/enduro2d/high/systems/spine_system.cpp
@@ -14,10 +14,11 @@
 
 namespace e2d
 {
-    spine_system::spine_system()
-    {}
+    spine_system::spine_system() {}
 
-    spine_system::~spine_system() noexcept = default;
+    spine_system::~spine_system() noexcept {
+        spAnimationState_disposeStatics();
+    }
 
     void spine_system::process(ecs::registry& owner) {
         float dt = the<engine>().delta_time();