Come Together is a song by The Beatles, which first appeared on the 1969 album Abbey Road, and was written by John Lennon (although credit was shared with Paul McCartney). Prince has performed the song regularly following 7 from 2006-9, playing it over the same beat and often leading into various chants not taken from the song itself.
A live version of the song, recorded at the 2008 Coachella festival, was streamed on his Lotusflow3r.com website (following directly on from 7), starting the day the site opened, 29 March 2009. In 2011, a live version was streamed as a YouTube video (audio only, with a static image) on Andy Allo's Facebook page within hours of its performance. No studio version by Prince is believed to exist.
Prince has also covered other songs by the same band: The Long And Winding Road, While My Guitar Gently Weeps, and With A Little Help From My Friends.