American conductor of opera, and symphonic and choral works. He is Music Director of Los Angeles Opera and Principal Conductor of the Italian RAI National Symphony Orchestra. He was the long serving director of the two-week Cincinnati May Festival from 1979 through 2016. From 2005 to 2015, he was music director at the Ravinia Festival, the summer home of the Chicago Symphony Orchestra. He is known for his efforts in reviving music by composers suppressed during the Nazi regime.