I like to play along with BIB on a synthesizer keyboard. I would like to see a feature where you could make a notation in the BIB song at various points that would allow you to specify a program change that could be sent on a pre-specified midi channel to change the program. These program changes would be different from program changes that affect the voices BIB is playing. The goal would be to have the voice on the instrument you are manually playing change, for example: from piano to strings or from flute to a clarinet.