Off the mixtape Hip Hop Mashups Special: Unk. <br /><br />Download the song: http://3.ly/6aXg <br /><br />Download the whole mixtape: http://hiphop-mashups.blogspot.com/2010/10/hip-hop-mashups-special-unk.html <br /><br />A Cappella: Unk - Back It Up <br />Instrumental: Gucci Mane - Beat It Up <br />Tempo: 65 BPM <br />Mixed On: 2010-10-13
