the first on Hammond organ and the second on Modular Moog, in a similar manner to the mutation stops on pipe organs, such as the "Twelfth" at 2 2/3' pitch played against a 4' "Principal" (which plays the eighth note). In the second instance, the triad is both quartal and quintal, being 1+4+5. Ray Manzarek of The Doors was another keyboard player and composer who put classical and jazz elements, including quartal harmonies, into the service of rock music. The keyboard solo of "Riders on the Storm", for instance, has several passages where the melody line is doubled at an interval of a perfect fourth, and extensive use of (E dorian) minor chord voicings featuring the seven and three, spaced by that same interval, as the prominent notes. Examples of quartal pieces Classical William Albright Sonata for Alto Saxophone and Piano Alban Berg Sonata for Piano, Op. 1 Wozzeck Carlos Chávez Sinfonía de Antígona (Symphony No. 1), uses quartal harmony throughout Sinfonía india (Symphony No. 2), the A-minor Sonora melody beginning in b. 183 is accompanied by quartal harmonies Aaron Copland Of Mice and Men Claude Debussy "La cathédrale engloutie", beginning and ending Norman Dello Joio Suite for Piano Caspar Diethelm Piano Sonata No. 7 Alberto Ginastera 12 American Preludes, Prelude #7 Carlos Guastavino "Donde habite el olvido" Howard Hanson Symphony No. 2 ("Romantic") Walter Hartley Bacchanalia for Band Charles Ives "The Cage" (1906) Central Park in the Dark "Harpalus" Psalm 24, verse 5 Psalm 90 "Walking" Aram Khachaturian Toccata Benjamin Lees String Quartet No. 2, Adagio Darius Milhaud Sonatina for flute & piano, Op. 76 Walter Piston Clarinet Concerto Ricercare for Orchestra Einojuhani Rautavaara "Kvartit" (Fourths), Op. 42, Études (Rautavaara) Maurice Ravel Ma mère l'oye : "Mouvt de Marche" of "Laideronnette" Ned Rorem King Midas, cantata Erik Satie Le Fils des étoiles Arnold Schoenberg The Book of the Hanging Gardens Chamber Symphony, Op. 9) slow section, b. 1–3 Wind Quintet, Op. 26 Cyril Scott Diatonic Study (1914) Nikos Skalkottas Suite No. 3 for Piano Stephen Sondheim Piano Sonata Karlheinz Stockhausen Klavierstück IX Howard Swanson "Saw a Grave" Heitor Villa-Lobos Nonet (1923) Anton Webern Variations for Piano, Op. 27 John Williams Star Wars - Main Title (1977) Superman - Main Title (1978) Jazz Miles Davis Kind of Blue Herbie Hancock "Maiden Voyage" Eddie Harris "Freedom Jazz Dance" McCoy Tyner "Contemplation" "Passion Dance" Folk On her 1968 debut album Song to