Music retargeting

Music retargeting is the idea of taking a song and remixing it from its own existing beats/structure to fit the music to certain constraints.

Example applications:

• Use retarget_to_length() to create a new shorter or longer version of a song that is a specific duration.
• Use retarget_with_change_points() to reach music change points (see Music novelty) at specified points in the retargeted music
• The EchoNest’s Infinite Jukebox.