Joseph Woelfl Joseph Johann Baptist Woelfl (German spelling:) Joseph Wölfl (24 December 1773 - 21 May 1812) was an Austrian pianist and composer. Biography "Gedenktafel" at Woelfl’s birthplace, donated 2012 by Stieglbrauerei Woelfl was born at Salzburg, where he studied music under Leopold Mozart and Michael Haydn. He first appeared in public as a soloist on the violin at ..