I jammed last week with some guys who play metal - Personally, I don't. Never have. I play mostly Jazz, Blues and some Reggae. Very much NOT metal... but the thing is in my area, no bands in my preferred genre/genres are looking, and I can't piece together enough other musos to form a bluey/soul/jazz band. I'm in my 40's, and even though I played guitar and bass in high school I never went through a Metallica phase or a metal period. I've always been a Jazz guy! There are, however, a good chunk of metal bands needing a bass player. Sooooo I headed out for a jam. If you can't be with the one you love, love the one you're with, right? Didn't really know what to expect, they didn't give me any covers to listen to, it was just a "show up and we'll play some riffs" kind of jam. 2 guitars, drums and a singer (who can play guitar if needed, one of the guitarists was playing bass after the bassist left). They were all good musicians and good communicators. We thrived from some riffs (a little jazz lingo there). My question/observation: The guitarists both had a 7-string they detuned a further step and a half down ( B E A D G B E ) -> Ab Db Gb Cb Fb Ab Db That... seems quite drastic and they would be playing spaghetti noodles on the low strings. I just tuned down a half step and played the higher octave or tried to play some more melodic things over the top, since a lot of their riffs were just those detuned guitars palm muted chugging away. Is there a reason they do it? Or is it just stylistic? It's just... very muddy!