List of bands (25):

Rammstein
Raven
Ravencrown
Red Hot Chili Peppers
Red Method
Retromorphosis
Revocation
Rhapsody of Fire
Ripped To Shreds
Rivers Of Nihil
Rob Zombie
Ronnie Romero
Rossometile
Sabaton
Saint Asonia
Saltwound
Sammy Hagar And The Circle
Sanctuary
SatchVai
Savage Blood