List of bands (21):

Michael Schenker Group
Ministry
Miscreance
Misfire
Monstrosity
Moonspell
Morbid Saint
Morningstar
Mortemia
Motionless In White
Motörhead
Mr. Big
My Dying Bride
Myrath
Naked Root
NamoR
Nazareth
Nefarious
Nenufar
Nervosa