Klezmer is a Yiddish combination of two Hebrew words "Kley Zemer" which means: "musical instruments."
The musical instruments were usually a violin, clarinet, accordion, guitar, flute, grand bass & drums.
Klezmer music was created by Jews in eastern Europe and it sounded like Jazz with a Jewish flavor.
Through the years, klezmer was neglected, but when Jews from Eastern Europe immigrated to the US they revived this style of happy music.