In an interview with TeamRock Radio's Dewsbury, he says: "I blame Thin Lizzy – I did a stint with them in 2011 and it reignited my passion for playing guitar again. So I came off that tour and called Vinny, Jimmy and Claude, just to play for the fun of it. Then Vinnie called up Andrew Freeman, he started singing and that was it."

Campbell admits it took him many years to recover from the pain of being fire by Dio – a move that led to both of them making negative comments about the other in the press.