Petio Kostov 16" viola, #48, Chicago, 2017 | Metzler ViolinsPetio Kostov is a member of the American Federation of Violin and Bow Makers, the most prestigious and exclusive organization in our trade. His artistic craftsmanship has earned him an international reputation among distinguished musicians and promising young artists. His instruments have been sought and purchased by musicians, and families of students enrolled in programs at Yale, Harvard, Duke, Tsing Hua University, Interlochen Arts Academy, and the