Vox Organalis is a concerto for organ and orchestra. It employs an ensemble comprising the compliment of wind, percussion, and string instruments normally available within a contemporary symphony orchestra with augmented brass and woodwind sections. It is intended to be performed with a large organ such as might be found in a symphony hall or large church. The work is in two movements, and its intended performance time is twenty-five minutes. Use of the concerto format within Vox organalis results in a new approach to organizing the interaction between the solo part and the orchestral accompaniment. The organ part is notated in traditional metered notation, but the orchestral notation is organized in units of clock time (seconds). The horizontal spatial arrangement of the orchestral notation corresponds to the timing of the metered organ part. Pitch organization in Vox Oraanalis is derived from a twelve-tone row based upon the natural harmonic series. Several techniques of serial composition were used to organize and select elements of the tone row for use in the construction of the work. Use of the tone row for horizontal and vertical pitch structures provides unity to the pitch organization of the work. Vox Organalis is constructed in …