The talented (and, sure, conflagrant) M.I.A. is out on the circuits in support of new album Matangi (critically-acclaimed, except for a couple of carping cranks).  The  London-born singer/rapper showed up on Fallon last night to perform Come Walk With Me with a rare (for her) backing by a live band (The Roots and couple extra singers).  Check it out below, and watch as the troupe gets their tribal on.  Like previous efforts, it’s a grower.