Larry Rippel / Courtesy of the artist

Callán, a Pittsburgh-based traditional Celtic folk ensemble , is comprised of artists from a wide range of backgrounds.

Percussionist Kip Ruefle found his way to traditional music by following his interest in the bodhran, the traditional Irish drum. He brings decades of performing rock and jazz into the mix.

Sheila Liming, however, grew up with traditional music. She remembers her Scottish grandmother singing songs when she was growing up in Seattle. Liming played...