Years ago, while still ensconced in my former life as a music industry stooge (and proudly so), I was in a meeting with legendary polka bandleader Jimmy Sturr. Sturr’s got more Grammies than Whitney Houston and Madonna combined, by the way. Bluegrass music was cresting its post-O, Brother wave of popularity and interest, and there was some marketing-driven discussion about the differences and similarities between bluegrass and polka.