John Mackey · b. 1973 · American
| Composed | 2010 |
| Instrumentation | Not yet confirmed. We publish TBD rather than a guess — a wrong instrumentation is a hiring error that costs real money. |
| Duration | 8 minutes |
| Tier | Core canon — standard repertoire |
| Editions & hire | Osti Music (John Mackey) — scores sold, parts licensed per performance ↗ |
| Source | Wind Repertory Project — Hymn to a Blue Hour ↗ |