Progressive bluegrass bands like the Seldom Scene borrowed a lot of material from them hippies out in California. Act I, from 1972, for example, contains a James Taylor nugget. But song selection isn't the hippies' defining influence on roots music. If you compare Act I to any bluegrass record made just a few years earlier, they'll sound decades apart. That's because the Seldom Scene weren't just jamming in the studio; they were -- in light of the psychedelic era -- treating each track like a soundscape.