Oratorio

Oratorio, a musical composition on a sacred theme, dramatic in form and associated with orchestral accompaniments, but without scenic accessories; it derives its name from the oratory of St. Philip Neri at Rome, in which a composition of the kind was first performed, and was a musical development of the miracle plays (q.v.).

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Orangemen * Oratory, Congregation of the
Opinicus
Opitz, Martin von
Oporto
Opportunist
Optimism
Opus Operatum
Oran
Orange River
Orange River Colony
Orangemen
Oratorio
Oratory, Congregation of the
Orcagna
Orchardson, William Quiller
Orcus
Ordeal
Ordericus Vitalis
Orders in Council
Oreades
Oregon
Orelli, Conrad von

Nearby

Links here from Chalmers

Gabbiani, Antony Domenick
Majoragius, Mark Antony
Mantegna, Andrea
Quintilian, Marcus Farius