Sondheim wrote the score in a quasi-Japanese style of parallel 4ths and no leading tone. He did not use the pentatonic scale; the 4th degree of the major scale is represented from the opening number through the finale, as Sondheim found just five pitches too limiting. The music contrasts Japanese contemplation ("There is No Other Way") with Western ingenuousness ("Please Hello") while over the course of the 127 years, Western harmonies, tonality and even lyrics are infused into the score. The score is generally considered to be one of Sondheim's most ambitious and sophisticated efforts.