Mainzer Domchor is the cathedral choir of Mainz Cathedral in Germany, with roots in the cathedral's choral tradition dating back several centuries and primarily performing sacred and liturgical choral music. Its repertoire ranges from Gregorian chant and Renaissance polyphony through Baroque and Romantic works to contemporary sacred compositions, and it fulfils liturgical duties while also giving concert performances within the cultural life of Mainz and the broader German church-music tradition.