Been there, tried them. It's conceivable that what I want is there, but if so, I can't see them. To clarify, what I'm looking for is not general sysex decoding, but a means of decoding a very specific Korg encoding mechanism (if someone else is doing the same, I don't know who; but I'm not familiar with the formats in general). So I don't see any MIDI modules on CPAN that cover this. But thanks!