Earlier today, Warner Bros. Records and NPG collaborated on a new compilation of Prince's greatest songs. 4Ever consists of 40 tracks, including the previously unreleased 'Moonbeam Levels', which was recorded in 1982 during the time that Prince was in the studio putting together 1999.

ABC News played the track for Prince fans, who took part in a listening session at New York's Cutting Room Recording Studios. Listen here.