Here's a backing track I recorded a while back for Sleepwalk.
It's more of a smooth jazz version like Larry Carlton's not the original from the 50's. It's an MP3 a little less than 4 gigs.
http://www.gigasize.com/direct.php/mHiinpaEorGXf6Ohl4SirQ==/Sleepwalk_Master.mp3