The Symphony for Organ and Orchestra established Copland as a serious modern composer. Musicologist Gayle Murchison cites Copland's use melodic, harmonic and rhythmic elements endemic in jazz, which he would also use in his "Music for the Theater" and Piano Concerto to evoke an essentially "American" sound. he fuses these qualities with modernist elements such as octatonic and whole-tone scales, polyrhythmic ostinato figures, and dissonant counterpoint. Murchinson points out the influence of Igor Stravinsky in the work's nervous, driving rhythms and some of its harmonic language. Copland in hindsight found the work too "European" as he consciously sought a more consciously American idiom to evoke in his future work.