I just spoke with management.

Benny was not given the proper items to ensure a good performance.

It is strictly stated in his rider that he must have 11 bottles of schweppes Ginger Ale in the DJ booth.

They put Canada Dry, not knowing that Benny has a minor allergy to yellow dye number 7, which is contained in Canada Dry but not the schweppes.

Side effects are minor but it does cause your brain to go through a cyclic cycle of circular logic which makes judgment of beats, melodies and frequencies difficult if not impossible.

Lesson learned, next time listen to what the man says.
End of story.