"Klezmer Duets" by Deborah Strauss and Alan Bern is an ideal introduction to this traditional music. Although the clarinet is now associated with klezmer music, the violin was actually used centuries before the clarinet was even invented. Over that time, violinists developed special techniques of bowing, articulation, ornamentation, phrasing and timing to express the nuances of the music. These nuances cannot exactly be written down in standard notation and klezmer can be thought of as a kind of...