The MT9 format has six user-controllable unmixed channels of sound – chorus, vocals, bass and drum, guitar, and piano. What this translates into is a format that allows the user to have control over how the file is heard, for instance, say you hate the sound of Britney Spear’s voice but just love the production values? You can mix down the vocal channel and have an instant karaoke version. You could create an a capella version of the last Kanye Album, or cut out the guitar on a Green Day song and play along with your guitar.