diff --git a/go4k/tracker/defaultsong.go b/go4k/tracker/defaultsong.go
index ec4de66..9fe338a 100644
--- a/go4k/tracker/defaultsong.go
+++ b/go4k/tracker/defaultsong.go
@@ -16,10 +16,10 @@ var defaultSong = go4k.Song{
 	Patch: go4k.Patch{
 		go4k.Instrument{NumVoices: 2, Units: []go4k.Unit{
 			{"envelope", false, map[string]int{"attack": 32, "decay": 32, "sustain": 64, "release": 64, "gain": 128}},
-			{"oscillator", false, map[string]int{"transpose": 64, "detune": 64, "phase": 0, "color": 96, "shape": 64, "gain": 128, "flags": 0x40}},
+			{"oscillator", false, map[string]int{"transpose": 64, "detune": 64, "phase": 0, "color": 96, "shape": 64, "gain": 128, "type": go4k.Sine}},
 			{"mulp", false, map[string]int{}},
 			{"envelope", false, map[string]int{"attack": 32, "decay": 32, "sustain": 64, "release": 64, "gain": 128}},
-			{"oscillator", false, map[string]int{"transpose": 72, "detune": 64, "phase": 64, "color": 64, "shape": 96, "gain": 128, "flags": 0x40}},
+			{"oscillator", false, map[string]int{"transpose": 72, "detune": 64, "phase": 64, "color": 64, "shape": 96, "gain": 128, "type": go4k.Sine}},
 			{"mulp", false, map[string]int{}},
 			{"out", true, map[string]int{"gain": 128}},
 		}},