The backing track is for jazz musicians to practice songs that are in the Vanilla Book. All backing tracks have 4 bar introductions. Piano is on left channel, bass and drums are on the right channel. Number after the title refers to the number of beats per minutes. Chords to most of the tracks are found in the Vanilla Book section. Some songs have alternate tempos. All tracks are in MP3 format. Feel free to download them. All files can be heard using Windows Media Player or Quicktime programs.