Say what you will about Elvis Costello, the man keeps you guessing. Who would have thought the British singer/songwriter would ever collaborate on an album with legendary hip-hop band The Roots? And yet September saw the release of Wise Up Ghost, the result of that very team-up. Given his unpredictability, there’s no telling what Costello has in store when he performs at The Capitol Theatre on November 11 and 12. He’s giving a solo performance—without The Roots, sadly—but you never know what tricks he has up his sleeve.