Tuesday night I saw a band called Blues Express (not very bluesy: Beatles, Kinks & Wilson Picket numbers included-I left at the interval, reducing the audience to 8!). The singer wore a black tux, white shirt without a tie and a headscarf (he'd probably call it a bandana but it always reminds me of my ma & her generation doing the housework!).
I've noticed in pop/rock bands there is usually one member (lead singer or guitarist) who feels the cold, and however sweaty the venue needs to wear a parka or anorak and woolly hat. Conversly, another member, usually the drummer, can't stand the heat, so wears shorts and plays bare-chested or in a singlet. This summer I saw a couple of bands where the drummer actually had a fan mounted on his rig while the singer asked for the floor-mounted fan facing the stage to be turned off.

RtS
(still mostly wearing black)