Herb Cohen: Combative label boss and manager of Frank Zappa and Tom Waits

HERB COHEN, who has died aged 77 of complications from cancer, did not elicit much affection from the artists he managed, but he played a pivotal role in shaping the music of the Californian counterculture in the 1960s and early '70s. His most notorious relationship was with Frank Zappa, with whom he co-founded several record labels before they parted company amid a flurry of lawsuits.