Possible Clues:

• 'I Can See for Miles' band
• Cut in if they're still rocking!
• Band originally white hot, no longer 'with it'
• English group with hit 'Substitute' in 1966
• ''Pinball Wizard'' rock band
• 100+ million-selling band that once held a Guinness record for loudest concert
• "My Generation" rock band
• 'My Generation' rock band
• Group with two top 10 rock operas
• One of British rock's ''holy trinity''