Both themes are repeated eight times. At the climax, the first theme is repeated a ninth time, then the second theme takes over and breaks briefly into a new tune in E major before finally returning to the tonic key of C major. The melody is passed among different instruments: (1) flute, (2) clarinet, (3) bassoon, (4) Eclarinet, (5) oboe d'amore, (6) trumpet and flute (latter is not heard clearly and in higher octave than the first part), (7) tenor saxophone, (8) soprano saxophone, (9) horn, piccolos and celesta; (10) oboe, English horn and clarinet; (11) trombone, (12) some of the wind instruments, (13) first violins and some wind instruments, (14) first and second violins together with some wind instruments, (15) violins and some of the wind instruments, (16) some instruments in the orchestra, and finally (17) most but not all of the instruments in the orchestra (with bass drum, cymbals and tam-tam). While the melody continues to be played in C throughout, from the middle onward other instruments double it in different keys. The first such doubling involves a horn playing the melody in C, while a celeste doubles it 2 and 3 octaves above and two piccolos play the melody in the keys of G and E, respectively. This functions as a reinforcement of the first, second, third, and fourth overtones of each note of the melody (though the "G major" is 2 cents flat, and the "E major" is 14 cents sharp). The other significant "key doubling" involves sounding the melody a 5th above or a 4th below, in G major. Other than these "key doublings", Ravel simply harmonizes the melody with diatonic chords. The following table shows how the composition is played by what instruments (in order): The accompaniment becomes gradually thicker and louder until the whole orchestra is playing at the very end. Just before the end (rehearsal number 18 in the score), there is a sudden change of key to E major, but C major is reestablished after just eight bars. Six bars from the end, the bass drum, cymbals, and tam-tam make their first entry, and the trombones play raucous glissandi while the whole orchestra beats out the rhythm that has been played on the snare drum from the very first bar. Finally, the work descends from a dissonant B minor over F minor chord to a C major chord. Tempo and duration