This week on American Routes, we’ll ride along with fiddler and singer Alison Krauss on her journey through bluegrass and country, from small-town Illinois all the way to Nashville. Then it’s Hurray for the Riff Raff, a New Orleans folk band fronted by Alynda Segarra, whose roots are in the Bronx. Segarra tells of her own time traveling as a teenager and reconnecting with her Puerto Rican heritage. En route we’ll hear tunes from Chuck Berry, Bob Wills, Nina Simone and Tom Waits.