Dr. Jeff Loen is one of the most highly educated people in the violin field. In addition to a Ph.D. in scientific research, he has extensive training in violin making, restoration, and bow rehair and repair. He is internationally known for editing the CAS Journal (2000-2004; an international peer-reviewed journal on violin acoustics), for speaking at professional meetings including Oberlin Workshops, and conventions of the Violin Society of America and the American Federation of Violin and Bow Makers, and for writing numerous research articles on violin acoustics and a popular book on classic violins, violas, and cellos. Dr. Loen spent many years studying details of fine classic violins, violas, and cellos in the world’s best museums and collections. Results of his research on Stradivari and Guarneri del Gesu have been published by The Strad Magazine, the VSA Journal, and the CAS Journal, and he has written some popular articles for Fiddler magazine. His book on thickness graduations of classic instruments is owned by hundreds of violin makers, shops, schools, and enthusiasts worldwide. He has run a professional violin shop since 1995. In addition to sales, service, and rentals of Kenmore Violin’s stock of violin, viola, and cello, he maintains the instruments in several local school orchestras. He has played violin in orchestras, and banjo, guitar, mandolin, and fiddle in bluegrass bands, celtic groups, and theatrical productions. Currently when he has time to play, he plays Hardanger Fiddle in a band called Tinn Felen.