Related Clues:

• Key with no sharps or flats
• Key with no black keys
• Key using a piano's white keys only
• Key in which "Chopsticks" is usually played
• It's all ivory and no ebony
• Key with no flats or sharps
• Key represented by all white keys on a piano
• Key of 20 Haydn symphonies
• Key of Bizet's first symphony