| O God, our help in ages past, for chorus & organ (or piano), Op. 137 |  |
Modern
Choral
|
| O Lord, Bless Thy Mountains, for 2 pianos tuned in quarter tones apart, Op. 276 | |
Modern
Keyboard
|
| October Mountain, suite for timpani, 2 drums, tamtam, marimba I & glockenspiel (or marimba II), Op. 135 | |
Modern
Kammermusik
|
| Ode to the Temple of Sound, for orchestra, Op. 216 | |
Modern
Orchestral
|
| Odes of Solomon, pieces (3) for medium voice & piano, Op. 5 | |
Modern
Vocal Music
|
| Orbit 2, for piano, Op. 102 | |
Modern
Keyboard
|
| Oror ("Lullaby"), for violin & piano, Op. 1a | |
Modern
Kammermusik
|
| Out of the Depths (2 versions), for voice & organ (or piano; also for soprano, chorus & organ), Op. 142 | |
Modern
Vocal Music
|
| Pastorale No.1 for piano, Op. 111/1 | |
Modern
Keyboard
|
| Peace Be Multiplied, Op. 259/1 | |
Modern
Orchestral
|
| Poseidon Sonata, for piano, Op. 191 | |
Modern
Keyboard
|
| Prayer of St. Gregory (interlude from opera "Etchmiadzin"), for trumpet & string orchestra, Op. 62b | |
Modern
Concerto
|
| Prelude and Quadruple Fugue for orchestra (or strings & tympani), Op. 128 | |
Modern
Orchestral
|
| Preludes and Fugues (3) for piano, Op. 10 | |
Modern
Keyboard
|
| Processional and Fugue, for trumpet (or clarinet) & strings (from "30th Ode of Solomon"), Op. 76/5 | |
Modern
Concerto
|
| Prospect Hill, sonata for piano, Op. 346 | |
Modern
Keyboard
|
| Psalm and Fugue No. 2, for 4 horns | |
Kammermusik
|
| Psalm and Fugue, for string orchestra, Op. 40a | |
Modern
Orchestral
|
| Psalm, for brass quartet, Op. 358 | |
Modern
Kammermusik
|
| Requiem and Resurrection, for brass choir & percussion, Op. 224 | |
Modern
Kammermusik
|
| Return and Rebuild the Desolate Places, concerto for trumpet & wind symphony, Op. 213 | |
Modern
Concerto
|
| Rubaiyat, for speaker, accordion & orchestra, Op. 308 | |
Modern
Vocal Music
|
| Saris, for violin & piano, Op. 67 | |
Modern
Kammermusik
|
| Saturn, cantata for soprano, clarinet & piano, Op. 243 | |
Modern
Vocal Music
|
| Sextet for recorder, string quartet & harpsichord, Op. 164/1 | |
Modern
Kammermusik
|
