Sat., April 25 at 6:30 pm: Bluegrass Signal continues the Live at KALW series with three sets that were part of earlier On Air Folk Festivals: Laurie Lewis & Tom Rozum (originally broadcast on 11-21-15), Dix Bruce & Julie Cline (4-28-12), and Dix again with Mike Wollenberg & Barry Solomon (7-20-19).