Who'd believe that at any gig somebody's nose would be down into a cellphone... maybe he just made a snap and was wondering if to send it to Rolling Stone or at least to Getty...
I don't usually like to offer "critique", even when requested, but in this case, I think your muso shot has a lot going for it. If you are into Photoshop, then I'd suggest leaving the muso much as he is and do a lot of work playing around with that backdrop.
In the new world, the original file is just a starting place, as with a St Ansel negative. That's the best reason always to shoot RAW.
Play with it, blur bits of b/ground, clone it around; you'll be surprised how far imagination can take one and convert mundane into "I never would have imagined!"
Welcome to the coal tender.
;-)
Rob
P.S. Jeans and sweater is dressing down? Ye gods, there's no hope left for me: I thought that was being quite formal!