Vincent Persichetti · 1915–1987 · American
| Composed | 1971 |
| Instrumentation | Confirmed. A sourced chair count is held for this work — the scoring is part of the engine, not the public page. Sign in to see it → |
| Duration | 6 minutes |
| Tier | Discovery — worth programming, rarely heard |
| Editions & hire | Theodore Presser ↗ |
| Source | Theodore Presser 165-00059 — O Cool Is the Valley, op. 118 (printed parts list) ↗ |