diff --git a/.DS_Store b/.DS_Store
index d88aa39..e4970d0 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/rye_Ies.scd b/rye_Ies.scd
new file mode 100644
index 0000000..b6eb0b2
--- /dev/null
+++ b/rye_Ies.scd
@@ -0,0 +1,34 @@
+(
+SynthDef(\lead, {
+	arg freq = 440, gate = 1, modAmount = 5.0, modOffset = -0.91;
+	var sig, env, mod;
+
+	// envelope
+	env = EnvGen.kr(Env.adsr(0.056, 0.14, 0.584, 0.396), gate, doneAction: 2);
+
+	// nested modulation
+	mod = SinOsc.ar(freq + modOffset, mul: modAmount);  // inner modulator
+	sig = SinOsc.ar(freq, phase: mod).dup;              // main oscillator
+
+	// apply envelope
+	sig = sig * env;
+
+	// output
+	Out.ar(0, sig);
+}).add;
+)
+
+x = Synth(\lead, [\freq, 440]);
+x.set(\gate, 0);
+
+
+/*
+Next Steps:
+
+- [ ] MIDI microtuning helper
+- [ ] Test Param-GUI workflow
+- [ ] Test Ardour MIDI workflow
+- [ ] Test visual sound design workflow by connecting SC to xjadeo or similar
+- [ ] Connect Tidal with OSC
+
+*/
\ No newline at end of file