O Magnum Mysterium by Tomás Luis de Victoria, arranged by Richard Westenburg for SATB a cappella.
| Arrangement | Choral, SATB |
| Genres | Choral, Renaissance |
| Format | Vocal Score |
| NumberOfPages | 12 |
| Media | Sheet Music |
| Series | Walton Choral |
| Publisher | Walton Music |
| Contributors | Victoria, Tomas Luis de (Composer) Westenburg, Richard (Arranger) |
| Language | English |
| ISBN | 73999377835 |
| UPC | 073999377835 |