Baritone Thomas Gropper has appeared in opera and oratorio and has been increasingly active as a choral conductor and voice coach. He is also a significant educator. Gropper appeared in various Mozart operas and at the Stadttheater Ingolstadt in Simon Mayr's rarely performed Che Originali, and his recording debut came in that work on a recording by the Georgisches Kammerorchester Ingolstadt in 2001. He has been the conductor of the chamber choir Arcis-Vocalisten München and has led the group on numerous tours. In 2011, Gropper and Arcis-Vocalisten München released an album of Bach cantatas. Gropper has continued to record, issuing albums of music by Bach, Carl Heinrich Graun, and, in 2023, Carl Loewe, of whose Jan Hus Oratorium, Op. 82, he gave the recorded premiere.