( ~metrob = Bus.audio(s, 2); ~metromix = SynthDef(\metromix, { arg in=1, out=0, amp=1; Out.ar(out, amp * In.ar(in, 2)); }).play(s, [\in, ~metrob, \out, 0, \amp, 0]); ~metronome = Pbind( \instrument, \metronome, \dur, ~beatsperbar, \amp, 0.5, \pan, 0, \out, ~metrob ).play(~tc); )