a = Synth().note.seq( Rndi(0,12), 1/8 ) d = Delay() d.time = 1/128 d.feedback = 0.9 r = Reverb() r.decay = 0.95 b = Bus() b.fx.add(d) b.fx.add(r) var toggle = false f = function() { toggle = !toggle // alter between true and false if(toggle){ a.send( b, 1 ) } else { a.send( b, 0 ) } } c = Seq( f, 1 )