Just as I’m getting to this, late as always, I see now that this show is sold out. So if you don’t have tickets, sorry. But I’d like to make a note of it, being as how it’s a big “Boston Band Spectacular”, and at least one of the bands is coming out of a kind of semi-retirement. So I’ll briefly profile all three. If you already know all about them and are going to Great Scott’s Wednesday night, awesome. If you don’t know about them, check ’em out. How’s that?