[...]On The Crusade, Heafy's vocals changed from the metalcore scream that was featured on the band's previous albums, to more singing on this album. This new singing style, along with the band's thrash metal music were criticised of sounding too much like Metallica, who was a major influence on the band.[21] Heafy commented on the change:
"If anyone is wondering why the screaming is gone it's because the four of us were never into bands that scream and we don't like any of the current bands that scream, so we asked ourselves why we're doing it. This time around I wanted to be a better singer because that's what we wanted to hear, so we dropped the screaming and did a lot of vocal training and vocal work."
—Matt Heafy[...][22]