All very well but was this not about the Casio VL-1 ?
Actually I had one ( still have come to think of it) and used it on some recordings. I have uploaded one of those so brace yourselves !
I used two Sony tape recorders to pingpong the recordings. The drums are from an L.P. on which an LA session drummer did his stuff ( series of five called DrumDrops) so you had to play along with the drummer so to speak. The leadsinging was my girfriend's at the time.....those were the days
Mind you my current PA800 and Tyros 4 don't sound too bad either
https://app.box.com/s/btrfdd92o0l6jhnojw63regards,
John