Possible Clues:

• German composer
• 'Parsifal' composer
• Honus whose baseball card is one of the rarest and most expensive in the world
• Composer of 'The Flying Dutchman'
• 'Siegfried' composer
• Baseball legend Honus
• German composer of The Ring Cycle
• Baseball great Honus
• Ring Cycle composer
• German composer, d. 1883