Robert Wiemken, a French hornist for many years before turning to early music and period instrument performance, is now a multi-instrumentalist, focusing on the recorders and double reed instruments of the late Medieval through the Baroque periods, most notably the Renaissance shawm and dulcian, or curtal, and the Baroque bassoon.

He is currently artistic co-director of Piffaro, and also directs the early music ensembles at Temple University's Esther Boyer College of Music and Dance in Philadelphia. He has performed with numerous ensembles, including New York's Ensemble for Early Music, the Grande Band, the Boston Early Music Festival Orchestra, King's Noyse, the Newberry Consort, the Folger Consort, the Philadelphia Classical Symphony, Brandywine Baroque Orchestra and others. He has recorded on the Newport Classics, Deutsche Grammophon Archiv Produktion, Dorian Records, Vanguard Classics, Windham Hill, Pasacaille and Eufoda labels.

Bob Wiemken is also a noted reed maker, specializing in the double reeds of the medieval through Baroque periods.