“Grammy-winning and Oscar-nominated composer Michael Kamen has died at his London home at the age of 55. He collapsed after an apparent heart attack, according to his Los Angeles-based agent Jeff Sanderson.” Kamen was classically trained, but known chiefly for his crossover work, including a much-ballyhooed joint concert of the San Francisco Symphony and the rock band Metallica. He also collaborated on Pink Floyd’s classic 1979 album, The Wall.