Possible Clues:

• Stevie Wonder "Don't You Worry 'Bout ___"
• "I haven't __ to wear!"
• and 4, 12, 27, 8, 7, 1 Down and 28: Poet's description of gem ruins Joe's business, I confess, via a general theory of relativity (1,5,2,6,2,1,3,3,4,3,10,9)