Abe Schwartz

Abe Schwartz (1881–1963) was a well-known klezmer musician of the 1920s.

Schwartz was born outside of Bucharest, Romania, and moved to the United States in 1899. He soon distinguished himself as a talented arranger and composer of music, as well as a violinist, pianist, and bandleader.

The famous klezmer clarinetist Naftule Brandwein played for a time in Schwartz's ensemble, notably on popular songs like Brandwein's own "Firn Di Mekhutonim Aheym" (Leading the In-Laws Home). They also performed Schwartz's famous number "Di Grine Kuzine" (The Greenhorn Cousin), still played today by klezmer revivalists.

Strom, Yale. The Book of Klezmer: The History, The Music, The Folklore 1st ed. p. 157

...
Wikipedia