Many of the jazz midi and quite a few of the jazz piano realtracks were done by Miles Black. Use google to find him.

If you load up a song, say Fly me to the Moon, and pick a jazz style, and click on P for the Piano track you can see how the piano follows the piece. On the RealTracks if the button is green and there is a line under it, the notation for the RealTrack is there, it is usually pretty close in transcription, because someone played the phrases and someone else manually transcribed them. I have used this approach to spruce up a piece, in fact I've used it and printed it out and put it beside the fake book for inspiration while the singer has at the thing with me on just piano, no backing tracks.

On that note, there are note for note transcriptons you might note for sale here, Oscar Peterson's works. That makes for good study material. The Frank Mantooth series is also a good work, he puts in the optional chords he suggests, and you simply learn to be the drummer and background player for the
'band'. I practice this by muting the piano part, and the melody, and playing piano along with the bass and drums, often singing the lead once I'm good enough to do both at once. Lots of ways to skin this cat.

John Conley
Musica est vita