I agree with Don and Donny. The Midjay is a great little box. A couple of really cool features it has are:
1: The ability to change keys on mp3 or wav files without changing the tempo.
2: You are able to put onboard drumkits on smf's which greatly improve their sounds.

I use it in conjunction with a Tyros 1. I also have lots of files on it so I can use it on a grand piano job that needs a little kick. I wouldn't part with it.

Joe

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Songman55
Joe Ayala
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PSR S950, PSR S900, Roland RD 700, Yamaha C3 6'Grand, Sennheiser E 935 mic, several recording mics including a Neuman U 87, Bose L1 Compact, Roland VS 2480 24 Track Recorder
Joe Ayala