Theoretical key the signature this leads to a key whose key signature has an additional sharp. A piece in C that performs this modulation would lead to the theoretical key of G major, requiring eight sharps, meaning an F in place of the F already present. To write that passage with a new key signature would require recasting the new section using the enharmonically equivalent key signature of A major. An example of such recasting is Claude Debussy's "Suite bergamasque": in the third movement "Clair de lune" the key shifts for a few measures from D major to D minor (eight flats),
The Carnival of the Animals (better known in the English-speaking world as "Twinkle Twinkle Little Star"), the French nursery rhymes "Au clair de la lune", and "J'ai du bon tabac" (the piano plays the same melody upside down), the popular anthem "Partant pour la Syrie", as well as the aria "Una voce poco fa" from Rossini's "The Barber of Seville" can also be heard. The musical joke in this movement, according to Leonard Bernstein's narration on his recording of the work with the New York Philharmonic, is that the musical pieces quoted are the fossils of Saint-Saëns's time. Two pianos and cello: the lushly romantic