Gig review: John Zorn at 60
John Zorn is the prodigious exemplar of downtown New York's avant-garde. He's the most uncategorisable of the musicians who made their way during the city's economically bankrupt, artistically rich 1970s, sharing the era's punk spirit, but applying it over subsequent decades to classical music, free jazz, thrash-metal, klezmer, and anything else his generous, fierce and obsessive mind alighted on.