you'll also want an instrument interface - the sonicsmith ev1 - seems to be the best in lots of ways - apparently the pitch tracking is great for single note runs etc - don't think it can handle chords - but nothing else can either

-- JimHowell1970

It's actually the Sonicsmith ConVertor E1. I just got the module. It does a pretty good job of pitch tracking both diatonic and chromatic harmonica. Haven't tried it with anything else. It's not perfect by any means and glitches here and there. Also the firmware needs an update to get all the advertised features. I think it's coming Q2 this year.