Top London Stage This Week: Last Chance to See Orlando Bloom's "Killer Joe," 51st State
As London's heatwave continues into August, there are many cool performing-art shows on offer. In music, the BBC Proms this week includes everything from folk to Bernstein, Mahler, Britten and Wagner. Specialist festivals in and around the British capital include 51st State, for US house music, and Eastern Electrics for electronic dance.There are also some enticing new theater openings, including the latest play by "…