First performed during a Meditation for Christmas at Westminster Abbey on 19th December 2010. Each prelude is based on each of the Seven Great O Antiphons for Advent.
O Clavis David
O Emmanuel
O Oriens
O Radix Jesse
O Rex Gentium
O Sapientia
O Emmanuel
O Oriens
O Radix Jesse
O Rex Gentium
O Sapientia
| Arrangement | Organ |
| Genres | Post-1900 |
| Format | Instrumental Album, Instrumental Work |
| NumberOfPages | 21 |
| Media | Sheet Music |
| Publisher | St Rose, St Rose Publishing |
| Contributors | Muhly, Nico (Composer) |
| Language | English |