This is typical of me, don't post for ages then 2 at once. Anyway, for all of you that want midi files and anyone who is interested in having backing tracks in MP3 format, check out www.songgalaxy.com they are based in UK, have thousands of songs and each has a demo available for download or listening to. Some MP3's have backing vocals on them so may not be suitable for live keyboard players, but all the midi files are of a very high standard programmed by musicians for musicians.