Dr. Octagon
Artist with the following albums: "3000 Single", "Dr. Octagonecologyst", "Blue Flowers", etc...

Dr. Octojoculus
Artist with "Spleen" album

Dr. Octopus
Artist with "Monaco Street Crime Syndicate" album

Dr. Oetker
Artist with the following albums: "I'll be there (Maxi)", "6 frisch gebackene Kinderlieder zum Mitsingen"

DR. OLI
Artist with "RAP MP3 SNIPS" album

Dr. Olive
Artist with the following albums: "First DJ on the Moon", "Bass Scanner"

Dr. Onionskin
Artist with the following albums: "Split Pea Soup", "Future Electro", "Bully", etc...

Dr. Orlando Owoh and Omimah Band
Artist with "IYAWO Olele" album

Dr. Ott und die Lehrer
Artist with "Nicht versetzt" album

Dr. OZ
Artist with "Kurzyklus" album