Watch: AEROSMITH's STEVEN TYLER Joins THE BLACK CROWES For 'Mama Kin' Performance In London

AEROSMITH's Steven Tyler joined THE BLACK CROWES on stage earlier tonight (Wednesday, May 15) at Eventim Apollo in London, United Kingdom to perform a version of AEROSMITH's 1973 classic "Mama Kin".
Tyler's appearance came at the end of THE BLACK CROWES' concert at the 3500-capacity venue, which was...