Complex sentence: While on tour in 2011, Flatfoot 56 played SummerFest with Less than Jake, whose drummer, Vinnie Fiorello, owner of Paper + Plastick, saw the band play and was impressed by their energy and performance.
Split into simpler sentences: While on tour in 2011, Flatfoot 56 played SummerFest with Less than Jake. The drummer of Less Than Jake, Vinnie Fiorello the owner of Paper + Plastick, watched the band play and was impressed by their energy and performance.