All classical music festivals by alphabetical order (O)
O
Ojai Music Festival
CALIFORNIA
OK Mozart Festival
BARTLESVILLE
Olympia Experimental Music Festival
OLYMPIA
Olympic Music Festival
PORT TOWNSEND
Opera Barga Festival
BARGA
Opéra De Baugé
BAUGÉ-EN-ANJOU
Opera Holland Park
ROYAL BOROUGH OF KENSINGTON AND CHELSEA
Opera In The Ozarks At Inspiration Point
EUREKA SPRINGS
Opera Saratoga
SARATOGA SPRINGS
Opera Theatre Of Saint Louis
ST. LOUIS
Opernfestspiele Heidenheim
HEIDENHEIM AN DER BRENZ
Oper Oder-Spree
NEUZELLE
Operosa
BELGRADE
Opus Festival
JERUSALEM
Orchestrades Universelles
BRIVE-LA-GAILLARDE
Oregon Bach Festival
EUGENE
Orlando Festival
KERKRADE
Osor Musical Evenings
MALI LOŠINJ
Ostrava Days
OSTRAVA
Ottawa Chamberfest
OTTAWA