Possible Clues:

• Operetta composer Franz __
• Composer's husband opens rogue parcel, non-PC
• Franz --, composer of the operetta 'The Merry Widow'
• "Merry Widow" composer Franz
• Composer the French hear, but not English
• Composer thrown out of Yale? Harvard
• Hard cutting tragic role for operetta composer
• Musician reinterpreted Mahler, ignoring his first
• Viennese composer
• One encapsulated by memorable harmonies?