diff --git a/assets/music/main_theme.wav b/assets/music/main_theme.wav
index e04baf8..cce8552 100644
Binary files a/assets/music/main_theme.wav and b/assets/music/main_theme.wav differ
diff --git a/assets/source/music/dev.clj b/assets/source/music/dev.clj
index bfe1daa..76846bf 100644
--- a/assets/source/music/dev.clj
+++ b/assets/source/music/dev.clj
@@ -15,6 +15,6 @@
 
 (defmethod task "play"
   [_]
-  (music.core/-main))
+  (music.core/-main "main_theme"))
 
 (task *command-line-args*)
diff --git a/assets/source/music/src/music/core.cljs b/assets/source/music/src/music/core.cljs
index 1e59774..822d7c3 100644
--- a/assets/source/music/src/music/core.cljs
+++ b/assets/source/music/src/music/core.cljs
@@ -1,10 +1,8 @@
 (ns music.core
-  (:require-macros [music.music]
-                   [music.core :refer [build-for-cljs]]))
+  (:require-macros [music.core :refer [build-for-cljs]]))
 
 (defonce audio (js/document.createElement "audio"))
 (set! (.-src audio) (build-for-cljs))
 (set! (.-controls audio) true)
 (js/document.body.appendChild audio)
 (.play audio)
-
diff --git a/assets/source/music/src/music/songs/main_theme.clj b/assets/source/music/src/music/songs/main_theme.clj
index d6d9804..d168597 100644
--- a/assets/source/music/src/music/songs/main_theme.clj
+++ b/assets/source/music/src/music/songs/main_theme.clj
@@ -1,10 +1,75 @@
-(ns music.songs.main-theme)
+(ns music.songs.main-theme
+  (:require
+    [clojure.set :as set]
+    [edna.core :as edna]))
 
-[:piano {:octave 4
-         :tempo 60}
+(def tempo 72)
 
- #{:-d :-a :e :f#} :a #{:f# :+d}
- #{:-e :e :+c} :a #{:c :e :f}
+(defn intro [volume]
+  #{
+    [:piano {:octave 4
+             :tempo tempo
+             :volume volume}
+     1/4 :-d :-a 1/8 :-e :-c 1/4 :-g :e :c
+     1/2 :-d
+     1/4 :-d :-a 1/8 :-e :-c 1/4 :-g :d :-f 1/8 :e :g 1/4 :f :a 1/16 :g 1/4 :f  1/2 :c] })
 
- #{:-d :-a :e :f#} :a :+d :+c# :+e :+d :b :+c#
- #{:-e :c :a} #{:c :e}]
+(defn verse [volume]
+  #{
+    [:piano {:octave 4
+             :tempo tempo
+             :volume volume}
+     1/16 #{:-d :f#} 1/8 #{:-e :+f} :a 1/2 #{:f# :+d}
+     :r :r
+     1/16 #{:-c :g#} 1/8 #{:-e :+f} :b 1/2 #{:+d :f#}]
+    [:steel-drum {:octave 3
+                  :tempo tempo
+                  :volume (quot volume 2) }
+     1/8 :-a :a :b 1/2 :a
+     :c :c
+     :a 1/8 :b :a :-a]
+    [:acoustic-bass {:octave 3
+                     :tempo tempo
+                     :volume (quot volume 3) }
+     1/8 :-a :a :b 1/2 :a
+     :c :c
+     :a 1/8 :b :a :-a]})
+
+(defn pre-chorus [volume]
+  #{
+    [:steel-drum {:octave 3
+                  :tempo (* 2 tempo)
+                  :volume volume}
+     1/8 :a 1/4 :a 1/8 :b 1/2 :-a]
+    [:acoustic-bass {:octave 3
+                     :tempo (* 2 tempo)
+                     :volume volume}
+     1/8 :b 1/4 :c 1/8 :g 1/2 :-g#]
+    })
+
+(defn chorus [volume]
+  #{
+    [:piano {:octave 3
+             :tempo tempo
+             :volume volume}
+     1/16 #{:-d :f#} 1/8 #{:-e :+f} :a 1/4 #{:f# :+d}
+     1/16 :c :r :d :r :e :r :f
+     1/16 :r 1/4 :d 1/8 :r :r
+     1/16 :f :r :e :r :d :r :c ]
+    [:acoustic-bass {:octave 3
+                     :tempo tempo
+                     :volume (quot volume 3) }
+     1/16 :-a :a :b :c 1/4 :a
+     1/64 (repeat 7 [:c :d :g :-f])
+     1/16 :a :c :b :a 1/4 :-b
+     1/64 (repeat 7 [:-b :a :c :-g])] })
+
+(concat
+  (map intro [20 40 80 100])
+  (map verse [100 80])
+  (map pre-chorus [60 80])
+  (map verse [100])
+  (map pre-chorus [60 80])
+  (map chorus [100 100])
+  (map verse [100 60])
+  (map chorus [40 20]))