Kol Simcha is a band playing mostly klezmer and jazz music, founded in 1986 in Basel, Switzerland. It is composed of
* Michael Heitzler, clarinet
* Ariel Zuckermann, flute
* Daniel Fricker, bass
* Olivier Truan, piano
* David Klein, drums

In 2003, the band has been renamed The World Quintet, together with a new musical repertoire.