May is a busy month for live music and touring bands. Philadelphia has a lot of music venues from corporate, concrete auditoriums to grandiose concert halls to dive bars and basements, but something was missing: a midsized concert hall with character. Four Corners Management, R5 Productions and New York's, Bowery Present's, has come together to fill that void. Union Transfer is a beautifully designed indie-rock-centric theatre that boasts "the best and biggest PA/sound System in Philadelphia." If you haven't checked it out yet this the time whether you prefer folk music, indie rock or rap. On May 5th see uber-talented, multi-instrumentalist Andrew Bird. Celebrate Philly rapper Meek Mill's birthday on May 6th, or check out electronic indie darlings, M83, perform on the 11th.