hi anders - I think the ':value 128' is causing the problem: when you fit 128 into a 7-bit byte you get 0: ? (mod 128 (expt 2 7)) => 0 On Nov 24, 2005, at 3:41 AM, andersvi@extern.uio.no wrote: > (new midi-control-change :time 0 :channel 0 :controller +bank-select+ > :value 128) [...] > 0 #<Control-Change 0 "bank-select" 0>