[nre]

While this might seem to be intended for DJ remixes a demixer also lets you jam along to your favorite songs. For instance you can extract only the voice, bass, and drums and play along with your guitar like you were a part of the band.

[npsimons]

> While this might seem to be intended for DJ remixes a demixer also lets you jam along to your favorite songs.

Not to mention arranging or just notating songs.