The choral cantatas are Reger's most personal and most substantial contribution to one of the principal categories of Protestant church music, and they are only major works in this field by one of the foremost composers of his time. This is true despite the fact that Reger himself does not appear to have considered the cantatas to figure among his principal compositions, as he gave them no opus numbers. In contrast to the three other chorale cantatas of Reger which exist in a definitive form, there is no record of the place or date of the first performance of "O wie selig", or indeed of any performance of it during the composer's lifetime.
| Genres | Sacred |
| Format | Score |
| NumberOfPages | 8 |
| Media | Sheet Music |
| Publisher | Carus Verlag |
| Contributors | Reger, Max(Composer) Massenkeil, Gü nther(Artist) |
| Language | German |
| ISMN | 9790007081706 |