Complex sentence: His work has been performed by the Los Angeles Philharmonic, Mormon Tabernacle Choir and The Boston Pops and has been heard at Carnegie Hall, The Metropolitan Opera, The Hollywood Bowl, the Sydney Opera House, London's O2 Arena and The White House.
Split into simpler sentences: His work has been performed by the Los Angeles Philharmonic, the Mormon Tabernacle Choir and The Boston Pops. It has been heard in performance at Carnegie Hall, The Metropolitan Opera, The Hollywood Bowl, the Sydney Opera House, London's O2 Arena and The White House.