Composed in 1883, the Third Mephisto Waltz (S.216) takes the harmonic language even further, featuring chords built up by fourths with numerous passages of descending minor triads whose roots are a semitone apart. The chord on which these progressions are based, according to Alan Walker, "is difficult to explain in terms of traditional harmony. It is best regarded as a 'fourths' chord in its last inversion." Tonally, the music is pulled between F major, D minor and D minor. As in its predecessors, the Third Waltz has the devil dancing in triple time while other groups of three move past so quickly that a larger rhythm of four is established, and triple time is abandoned altogether in the dreamlike passage near the work's conclusion. Humphrey Searle, in his book "The Music of Liszt", considers this piece to be one of Liszt's finest achievements.