klezmer
n.
1 pl. klez#mo[rim$ 73m! rcm$8
a) [Historical] an itinerant musician who performed at Jewish weddings and holiday celebrations in E Europe b) a musician who performs instrumental Jewish folk music derived from E European folk songs, Hebrew melodies, polkas, etc.
2 this instrumental Jewish folk music

I wonder if it was one of these guys who started the computer word so named.