This new Roots Rewind show features the best in newgrass and jamgrass, from founding fathers to favorite sons. Sam Bush and John Cowan were in New Grass Revival together in the 70s and 80s. We'll hear from their respective bands, Cowan in 2012, Bush just last year. Leftover Salmon shows how far other bands took the newgrass idea in Colorado. And we close the show with second generation superstars the Travelin' McCourys.