O Obsession (FRA) 1994 O´Connor, Gerry (IRL) 1998 O´Connor, Maírtín & Garry O´Briain (IRL) 1991 O´Connor, Maírtín & The Chatterbox Band (IRL) 1997 Odyssia (GRE/GER) 1992 Ökrös (HUN) 1995 Okuta Percussion (NIG/AUS/GER) 1992, 1994 Omen (VCR/GER) 1997 Orange Jr. (GER) 2000 Orchestra a Plettro "Raffaele Calace" (ITA) 1995 Orchestre National de Barbès (ALG/FRA) 1998 Original Oberkreuzberger Nasenflötenorchester: Der Grindchor (GER) 2003 Original Turtle Shell Band (Belize) 2001 Orkiestra P.W. Swiety Mikolaja (POL) 1994 Orlek (SLO) 1998 Orquesta Popular de Câmara (BRA) 2003 Ostfriesische Volkstanzgruppe Aurich (GER) 1991, 1994 Ostkreuz Combo (GER) 1994, 2002 Outback (GER) 1991 Oyster Band (GBR) 1994, 1998 Oyster Ceilidh Band (GBR) 1998