Scroll down to find your instrument and select the part you wish to play. There are multiple different parts for each instrument.
Level 0 is the easiest (designed for Beginner Students) up to Level 3+ which is the hardest (designed for Advanced Students).
There is a Full Band Audio Recording at the Top of the List that Students can Listen to and Play-Along with. You can also click through to another page with recordings of the individual parts.
Individual Music Parts