Possible Clues:

• Apt cry of encouragement for a geologist?
• Continue performing with Diamond
• 'Sign of the horns' meaning
• 'Cool, man!'
• 'Keep up the good work!'
• Comment with the pinkie and forefinger extended upward
• "Awesome, bro!"
• ''Atta boy!''
• "You da man!"
• 'All right, dude!'