MPS (Musik Produktion Schwarzwald) was the first German label to exclusively release jazz. MPS produced and released recordings by American, European and Japanese jazz artists. Recordings of the Berlin Jazz Days, the Donaueschingen Music Festival and the Baden-Baden New Jazz Meeting were also published. Performers under contract to MPS included Oscar Peterson, George Duke, Albert Mangelsdorff and Lee Konitz. It is worth noting the wide stylistic spectrum, from swing to free jazz, rock jazz and precursors of ethno-jazz.