Gli Helloween sono stati costretti ad annullare due date della leg messicana del loro Hellish Rock Tour (4 e 5 maggio) a causa di un'acuta infiammazione alle corde vocali del singer, Andi Deris.

Ecco il commento di Andi:
"I am deeply sorry for the fans in Guadalajara and Chihuahua, but we had no choice. After having problems in San Salvador I went straight to a specialist who diagnosed an acute inflammation of my vocals chords. In order to prevent serious damage on my voice, the doc strongly instructed me to let my voice rest for a few days, and we sadly followed his advice. We will try to reschedule these two shows as soon as possible."