A string band is an old-time music or jazz ensemble made up mainly or solely of string instruments. String bands were popular in the 1920s and 1930s, and are among the forerunners of modern country music and bluegrass.

Rural Black String Band Music
String band insulation system for commutators
Old-Time String Band From the North Carolina Piedmont
No Man's String Band: Following a winding road to their bluegrass home
Take Five: The Yonder Mountain String Band Expands to a Quintet
Carriacou String Band Serenade: Performing Identity in the Eastern Caribbean (review)
The Skillet Lickers: A Study of a Hillbilly String Band and Its Repertoire
Carroll Best and the White Oak String Band: Old-Time Bluegrass From The Great Smoky Mountains
Best Practices for Old Time String Band Contests Final Report on AFS Professional Development Project
The Hungarian Dance House Movement and Revival of Transylvanian String Band Music