Marvin Hamlisch, musical multi-tasker, is remembered in a documentary
The composer-conductor is subject of 'Marvin Hamlisch: What He Did for Love.' He and his songs for theater ('A Chorus Line') and film ('The Way We Were') are recalled by the likes of Barbra Streisand.Marvin Hamlisch was a 6-year-old prodigy when he was accepted into the Juilliard School of Music. He went on to train intensively with the goal of becoming the next great classical pianist. But Hamlisch ultimately decide…