Franz Hauk has multiple careers as an organist, choir director, educator, and musicologist. He has been prominent in the rediscovery of composer Simon Mayr. In 1996, Hauk made his recording debut, appearing on a Leipzig Symphony Orchestra album of music by Alexandre Guilmant. In 2003, he founded the Simon Mayr Chor ("Simon Mayr Choir"), dedicated to the music of that neglected German composer, and he continues to perform and record with that group. Hauk is particularly notable for his vigorous recording career. In 2020, he and the Simon Mayr Chor issued a recording of Mayr's Mass in E flat major. In 2023, he led the early music group Concerto de Bassus on a recording of Antonio Sacchini's oratorio L'abbandono delle ricchezze di S. Filippo Neri.