Rapper Rapsody appears on song 'Complexion (A Zulu Love)'
New album was released earlier than expected on March 16
West thanks his fellow rapper for 'the vibrations and the spirit'
The eagerly awaited hip-hop album was released a week early
The record has been removed from digital outlets in the US
New album available on iTunes and Spotify seven days ahead of schedule
Hear the third song to be taken from new album 'To Pimp A Butterfly'
New album features the singles 'The Blacker The Berry' and 'i'
The Compton rapper says the meaning of the album's name will 'be taught in college courses someday'