Many popular musicians have created fictional alter egos as a way to explore new sonic avenues that they wish to experiment with. David Bowie had Ziggy Stardust and Aladdin Sane, David Johansen had Buster Poindexter, Lady Gaga spent a whole season as Jo Calderone, and the less said about Garth Brooks’s Chris Gaines era the better, but it certainly happened. For them, it’s a kind of performance art — an expression of their interest in stepping out of their comfort zone and giving the…