Disklavier

The Yamaha DVD that came with our unit describes the ability to insert an audio CD in the CD player of the disklavier and also a Floppy Disk into the FP drive and to have the disklavier play the CD of the artist and the Yamaha to play the piano portion. Is this a Pianosoft application and if so which one? I have a new system and so far I'm only seeing downloads available where someone else is playing their version of the artists (such as Elton John) piano accompaniment rather than actually having Elton John's version so it's like he's playing in your living room. Where do I go for that capability?