How many movies have Oliver Hartmann and Ronald Matthes collaborated on?
They have worked on 1 movie together! Their first movie together was Avantasia - The Flying Opera: Around the World in Twenty Days (2011) and was their highest rated movie together. They have not worked together since Avantasia - The Flying Opera: Around the World in Twenty Days (2011).
Role
Guitars & Backing vocals (lead vocals on tracks 10 and 16)
Crew
Director