Complex sentence: Harper began as a dancer/chorus girl on Broadway in 1959 in the musical "Li'l Abner" and went on to perform in several Broadway shows for Michael Kidd.
Split into simpler sentences: Harper began as a dancer/chorus girl on Broadway in the late 1950s and early 1960s. She began with the musical "Li'l Abner" and went on to perform in several Broadway shows for Michael Kidd.