Possible Clues:

• 35-Across's sound
• Lots of it, by the sound of it
• Loud sound as of lion
• What the joiner could do, in wildest rage
• Sound of crowd approval
• First sound of an MGM movie
• Sound from early arenas
• No DNA in Andorra is something to shout about
• Banzai Pipeline sound
• Waiting For The --- (Fastway album)