Music is part instrumentation and part lyrics. Blues about living in Hoovervilles, Reggae about subsistence survival, funk that is shouting about Chocolate City are rooted in experience and expression of social situations. When I was learning Redemption Song on an acoustic in Santa Barbara as a college kid in the '80's, I was just mimicking chords, but it lacked authenticity. These new groups are often funky as hell and I enjoy the vibe, but the genres that are turning contemporary issues into songs have definitely changed and I think that is where this disconnect is- the blues was in the lyrics, beat up catalog guitars, beautifully imperfect recordings and heartfelt messages.