The Twin Atlas is a folk-rock band, known for its atmospheric folk and pop songs, written and home-recorded by Sean Byrne with Lucas Zaleski, who began playing together when they met at the University of Delaware in the early 1990s and began releasing music as The Twin Atlas in 2000.

Zaleski is now an NYC resident, and Byrne lives in Philadelphia, where he has drummed with the bands Lenola, Mazarin, Matt Pond PA, Audible and BC Camplight.