The fact that Swallow Hill has not only survived, but thrived over nearly forty years says a lot about the nonprofit's dedication to folk, roots and acoustic music of all kinds. Since its beginnings in 1979 as an outgrowth of the Denver Folklore Center, Swallow Hill has hosted local, national and international artists on its stages and taught countless students through its music school and, more recently, its outreach programs. Here's to another forty.