Rudolf Haken

Professor of Electric Strings and Viola, University of Illinois at Urbana-Champaign

photo by Sarah Scully

photo by Sarah Scully

photo by Sarah Scully

photo by Sarah Scully

Photo by Yore Kedem

Photo by Yore Kedem

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

Photo by Makoto Akiya (Tokyo, Japan)

Photo by Makoto Akiya (Tokyo, Japan)

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Yore Kedem

Photo by Makoto Akiya (Tokyo, Japan)

Photo by Makoto Akiya (Tokyo, Japan)

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Astrid Loos (Bayreuth, Germany) https://www.instagram.com/a.s.t.r.i.d.l.o.o.s/

photo by Sarah Scully

photo by Sarah Scully