I think the Keytron Midijay can do everything from lead vocal suppression to pitch/transpose and time stretching on WAV files. Don't know how effective it is a vocal suppression (never heard a vocal eliminator/suppressor I liked) but with Karoake files it should be pretty good at the pitch shift/stretch thing. With all of it's other functions including MIDI file playback and arranger functions the Midjay is practically a soloact swiss army knife.

[This message has been edited by Esh (edited 04-16-2006).]