Possible Clues:

• Obama education secretary ___ Duncan
• Obama cabinet member Duncan
• Composer suggests overtures to all really new entertainments
• 'A-Hunting We Will Go' songwriter
• Thomas ___, 'Rule, Britannia' composer
• Composer of the opera 'Alfred'
• ''Soft Flowing Avon'' composer
• 18th-century composer Thomas ____ wrote Rule Britannia
• Mythological princess (Greek)
• Rule Britannia's composer, d. 1778