So I am joining my first band. A metal originals band. At 41 years old. So obviously, we already have record contracts and 5,000-seat gigs booked. I went and jammed for the first time with them, and they want me to come back. I was nervous and screwed up a couple times, but I was able to jam along and even make a couple of seemingly well-received suggestions regarding some of the riffs/songs they were writing. +1 for me, yay.
The thing that caught my attention is that every time one of the guitar players showed me or the other guitar player a riff, it was usually phrased as "I'm on the 3rd fret, 5th string, slide to the 5th, then <whatever>". It was not described "I play C, slide to D, then <whatever>". Only one time when I asked for a chord progression was I given letters. I didn't get minor or major, either. The thing is, I'm not versed enough to know when certain chords are minor or major in any given key. I am versed enough to know to play a b3 in minor triads, a b3 and b5 in diminished triads, etc. Would this be concerning to anyone? Or should I just roll with it and see where it goes? I'm obviously not in it for money, and playing out is a long shot from my vantage point right now. I just want to get better and eventually play in front of people, either with this group or another one.