Complex sentence: Slash's signature skull with a top-hat, smoking a cigarette, was displayed on the main screen during his solo performance of "The Godfather theme", with a similar skull graphic during Duff's vocal performance.
Split into simpler sentences: Slash's signature skull with a top-hat, smoking a cigarette, was displayed on the main screen during his solo performance of "The Godfather theme". There was also a similar skull graphic during Duff's vocal performance.