 The anthem "Woodstock," which was written and first sung by Joni Mitchell while her records were still nearly entirely acoustic and while she was labeled a "folk singer", became a hit single for Crosby, Stills, Nash & Young when the group recorded a full-on rock version.By the late 1960s, the scene had returned to being more of a lower-key, aficionado phenomenon, although sizable annual acoustic-music festivals were established in many parts of North America during this period.The acoustic music coffee-house scene survived at a reduced scale.