Teetime, oh how I envy you.
An ELO Concert !!!!!!
Fantastic. One of the BEST bands ever.
All I can say is wear something cool, as in you will probably get very hot, especially if you are able to dance around amongst crowds of other fans. T-shirt and Jeans always works. If the concert is outdoors, then do get yourself a simple plastic 'poncho' just in case it rains. They are cheap, and you can get them from shops that sell Tents, walking shoes etc. They fit easily into your handbag too.
But then again you may have Mr Blue Sky.??.
I hope that you have a really, really, wonderful time Teetime
Please post a photo on gransnet. x