Complex sentence: Mangione served as director of the Eastman jazz ensemble from 1968 to 1972, and in 1970, he returned to recording with the album "Friends and Love", recorded in concert with the Rochester Philharmonic Orchestra and numerous guest performers.
Split into simpler sentences: Mangione served as director of the Eastman jazz ensemble from 1968 to 1972. In 1970, he returned to recording with the album "Friends and Love", recorded in concert with the Rochester Philharmonic Orchestra and guest performers.