With his fifth album (previously titled as Good Ass Job – but now being changed) slated for release in September, ‘Power’ is still the only new material we’ve heard thus far. However, this week, Kanye kindly dropped by a Facebook office somewhere (!?) and gave accapella renditions of some of his new work. Despite the lack of a backing track to ride, West puts a lot of energy and passion into this performance, reveling in the chance to show off his new rhymes. Check out the performances below, which feature new songs ‘Lost In The World’, ‘Chain Gang’ and ‘Mama’s Boyfriend’. In other news, Kanye now has Twitter, follow him here, for updates about ‘dope’ shoes and stuff.