German composer and doctor. A chorister at the electoral court in Heidelberg by about 1521, where he also began to compose and to collect songs. Studied at Heidelberg with Lemlin and became a medical student at Ingolstadt in 1531; in 1534-9 he was in Wittenberg in Luther's circle; after qualifying he practised as a doctor in various German cities. He wrote a book of motets and psalms, but—more significantly—edited a monumental collection of German songs, the Frische teutsche Liedlein in five volumes (1539-56). These contain his own works as well as those of many composers associated with Heidelberg, and chart the development of the Liedfrom 4- to 5-part writing, and from the medium of solo voice with instruments to that of the vocal consort with all parts having text underlaid.