bop: free, fast, friendly, fun music stuff for Pd, old CPUs and RasPi

It’s free, it’s fast, it’s fun, it’s bop for the free Pure Data Vanilla. It runs on old computers. It runs on Raspberry Pi. “You probably don’t have any use for bop,” its developer says humbly – but wait, with everything from text sequencing to reverbs to esoteric musical notation, this looks great!