Complex sentence: During the Foo Fighters set, lead singer Dave Grohl halted the show to confront a member of the audience who was attempting to start a fight during their performance of their song'Skin and Bones'.
Split into simpler sentences: During the Foo Fighters set, lead singer Dave Grohl halted the show to confront a member of the audience who was attempting to start a fight. During their performance of their song'Skin and Bones'.