Complex sentence: They have supported acts such as Panic! at the Disco, Rx Bandits, 30 Seconds to Mars, Brand New, lostprophets, Motion City Soundtrack, and Head Automatica.
Split into simpler sentences: They have supported acts such as Panic! At the Disco, Rx Bandits, 30 Seconds to Mars, Brand New, lostprophets, Motion City Soundtrack, and Head Automatica.