SynthDef.new(\spinPan,
{|bus, sus, spin|
var osc;
osc = In.ar(bus, 2);
osc = osc * [FSinOsc.ar(spin / 2, iphase: 1, mul: 0.5, add: 0.5), FSinOsc.ar(spin / 2, iphase: 3, mul: 0.5, add: 0.5)];
ReplaceOut.ar(bus, osc)}).add;