Sequenza IV

The opening chords present all the pitch materials of the piece. They are of two kinds: (1) "resonant" chords made by superposing two major, minor, augmented, diminished triads (sometimes with an added seventh or ninth), to form basically "harmonic" structures, and (2) "anti-resonant" or "noisy" chords based on chromatic relationships and containing a large number of seconds and fourths, giving them a more "inharmonic" character (Guigue and Onofre 2007, 210). These chords are progressively horizontalised, creating "a syntactic flux between structurally opposite and intermediate constituents" (MacKay 1988, 223). The resulting opposition between chords and fast, single-voice chromatic figures resembles the compositional alternation of clusters and melodic gestures in Karlheinz Stockhausen's Klavierstück X (Guigue and Onofre 2007, 210).