Michael Kiwanuka at Celebrate Brooklyn (06/14/12) Photo: D. Caplan British soul singer Michael Kiwanuka‘s excellent debut, Home Again, has been shortlisted for the 2012 Barclayard Mercury Prize. Having recently opened for Laura Marling at Celebrate Brooklyn!, Michael will be back in NYC next week with headlining shows at Webster Hall on Sep 18 (Buy Tickets)…