B1 contains samples from Digable Planets - 9th Wonder (Blackitolism) and Wu-Tang Clan - Clan in Da Front.
B2 contains samples from LL Cool J - It Gets No Rougher.
B3 is a reggae track, a cover version of Bob Marley & The Wailers - Iron Lion Zion obviously sung by a different band years after Bob Marley & The Wailers were active. Apparently it was recorded live in Berlin as one of the singers shouts at the audience "How you're feeling, Berlin?" at minute 2:45.