Siccas Guitars are keeping me in business this week with their great YouTube channel! Bravo to them. This is Duo Daja Leevke Hinrichs & Stefan Hladek playing Allegretto Rondo Hamburger Sonate by German composer Carl Philipp Emanuel Bach (1714–1788) who’s papa was the big J.S. Bach. I love CPE Bach for his freedom and unpredictability. Stefan plays a 1927 Francisco Simplicio in the first part and a 1934 Hermann Hauser I in the second.