Ludwig Hupfeld, a German piano maker (and his company Ludwig Hupfeld, AG, Leipzig).
He also commented on Psalms in a manner to earn the praises of Hupfeld ("Psalmen," iv. 474), and attached the commentary to a paraphrase which appeared at Paris, 1533; Leyden, 1534; Basle, 1548, etc.
While not known as a public performer, Hupfeld was featured on a Victor Young & His Orchestra 78 recorded on January 22, 1932.