diff --git a/examples/audio/audio.cpp b/examples/audio/audio.cpp
index 5eb46d7..3645deb 100644
--- a/examples/audio/audio.cpp
+++ b/examples/audio/audio.cpp
@@ -103,7 +103,7 @@ void update(uint32_t tick) {
   // if the current sound has finished playing, or we changed a dial value
   // then restart the sound
   uint32_t full_duration = get_dial_value("duration") + get_dial_value("release") + get_dial_value("reverb");
-  if(change || audio_position() > full_duration) {
+  if(change || position() > full_duration) {
     set_voice();
   }
 }
@@ -188,6 +188,6 @@ void draw(uint32_t tick) {
 
   // draw current playback marker
   pen(0, 15, 15);
-  uint32_t pos = (audio_position() * 230) / full_duration;
+  uint32_t pos = (position() * 230) / full_duration;
   frect(pos + 5, 5, 2, 50);
 }
\ No newline at end of file
diff --git a/libraries/audio.cpp b/libraries/audio.cpp
index c0d4b1b..10dc8b7 100644
--- a/libraries/audio.cpp
+++ b/libraries/audio.cpp
@@ -9,6 +9,22 @@ namespace picosystem {
   uint32_t _duration;
   uint32_t _volume = 100;
 
+  voice_t voice(uint32_t attack, uint32_t decay, uint32_t sustain,
+                uint32_t release, int32_t bend,  uint32_t bend_ms,
+                uint32_t reverb, uint32_t noise, uint32_t distort) {
+    return {
+      .bend       = bend,
+      .bend_ms    = bend_ms,
+      .attack     = attack,
+      .decay      = decay,
+      .sustain    = sustain,
+      .release    = release,
+      .reverb     = reverb,
+      .noise      = noise,
+      .distort    = distort
+    };
+  }
+
   void play(voice_t voice,
     uint32_t frequency, uint32_t duration, uint32_t volume) {
     _frequency = frequency;
@@ -19,13 +35,8 @@ namespace picosystem {
     _ms = 0;
   }
 
-  uint32_t audio_position() {
-    return _ms;
-  }
-
-  // Convenience function to tell if the note is still playing
-  bool audio_playing() {
-    return !(_ms > _duration + _voice.release + _voice.reverb);
+  int32_t position() {
+    return (_ms > _duration + _voice.release + _voice.reverb) ? -1 : _ms;
   }
 
   uint8_t audio_sample(uint32_t ms) {
diff --git a/libraries/picosystem.hpp b/libraries/picosystem.hpp
index d26aaa1..efc09d2 100644
--- a/libraries/picosystem.hpp
+++ b/libraries/picosystem.hpp
@@ -170,12 +170,17 @@ namespace picosystem {
                 color_t* ps, int32_t so, int32_t ss, color_t* pd, uint32_t c);
 
   // audio
+  voice_t     voice(
+                uint32_t attack = 100, uint32_t decay = 50,
+                uint32_t sustain = 80, uint32_t release = 100,
+                int32_t bend = 0, uint32_t bend_ms = 0, uint32_t reverb = 0,
+                uint32_t noise = 0, uint32_t distort = 0);
   void        play(
                 voice_t voice, uint32_t frequency,
                 uint32_t duration = 500, uint32_t volume = 100);
   uint8_t     audio_sample(uint32_t ms);
-  uint32_t    audio_position();
-  bool        audio_playing();
+  int32_t     position();
+  bool        playing();
 
   // utility
   std::string str(float v, uint8_t precision = 2);
@@ -185,11 +190,6 @@ namespace picosystem {
   color_t     rgb(uint8_t r, uint8_t g, uint8_t b, uint8_t a = 15);
   color_t     hsv(float h, float s, float v, float a = 1.0f);
   buffer_t*   buffer(uint32_t w, uint32_t h, void *data = nullptr);
-  voice_t     voice(
-                uint32_t attack = 100, uint32_t decay = 50,
-                uint32_t sustain = 80, uint32_t release = 100,
-                int32_t bend = 0, uint32_t bend_ms = 0, uint32_t reverb = 0,
-                uint32_t noise = 0, uint32_t distort = 0);
   uint32_t    time();
   uint32_t    time_us();
   void        sleep(uint32_t d);
diff --git a/libraries/utility.cpp b/libraries/utility.cpp
index 7093140..866b9e9 100644
--- a/libraries/utility.cpp
+++ b/libraries/utility.cpp
@@ -64,22 +64,6 @@ namespace picosystem {
     return b;
   }
 
-  voice_t voice(uint32_t attack, uint32_t decay, uint32_t sustain,
-                uint32_t release, int32_t bend,  uint32_t bend_ms,
-                uint32_t reverb, uint32_t noise, uint32_t distort) {
-    return {
-      .bend       = bend,
-      .bend_ms    = bend_ms,
-      .attack     = attack,
-      .decay      = decay,
-      .sustain    = sustain,
-      .release    = release,
-      .reverb     = reverb,
-      .noise      = noise,
-      .distort    = distort
-    };
-  }
-
   // returns true if the provided rectangles intersect
   bool intersects(
     int32_t x, int32_t y, int32_t w, int32_t h,