Definition of half-diminished seventh
- Schoenberg exploited precisely such intervallic relationships in his twelve-tone works such as the Piano Piece, Op. 33a (1929), the opening chords of which feature a similar transformation of a dominant seventh to a half-diminished seventh.
- —Joseph H. Auner, in Schoenberg and His World, 1999
- The half-diminished seventh chord became a widely-employed source in nineteenth-century harmony because of its flexible communication between relative major and minor modes …
- —Mark DeVoto, Debussy and the Veil of Tonality, 2004
- … the half-diminished seventh chord is in many respects the star of the seventh chord harmonic cast.
- —Allen Forte, Listening to Classic American Popular Songs, 2001