When Igor Stravinsky got a commission to write music for a ballet depicting ancient fertility rituals, did he intend from the start to revolutionize musical history? He filled his colorful score (completed in 1913) with pounding, asymmetrical rhythms and harsh dissonances — unprecedented elements at the time; he's one of the many composers in the first few decades of the 20th century who tossed a bomb into the middle of Romantic-era assumptions about what music could be. This earthy, viscerally intense showpiece still startles audiences — especially those who see classical music as something stuffy and genteel. Think of it as heavy metal classical. Robert Craft, a longtime colleague of the composer, conducts a particularly gutsy and un-pretty performance.