I think part of this capo controversy simply derives from the type of music that dominates the session work in Nashville. Country music, like folk, calls for capos...it's that simple. It has nothing to do with lack of ability of the players...damn, those guys can play anything! It has to do with the use of open strings, and how open voicing are used in country music, particularly on acoustic guitar.

I played rockand roll and R&B for 25 years and never, EVER used a capo. It was not necessary. But now I am writing country music, on acoustic guitar, and my capo is my pal.