I quite frequently cycle to play in concerts - mostly cycling gear, but a T-shirt instead of jersey. In my rucksack a trumpet, posh shoes, dress suit , and music stand.I do occasionally get an odd look as I go into or leave the venue (quite often Exeter Cathedral), but I don't care: last time I drove into town it took me longer just to find a parking spot and to walk back to the cathedral as it would have done for me to cycle all the way from home. I just don the posh clothes over the cycling gear, and then am ready for a quick getaway at the end.