I remember having a concert in Bradford-Upon-Avon when I was a student. The only chair available in the building was a plastic, sloping thing which creaked loudly every time I moved (which was often as I tried to drag myself into a comfortable position to play)...
After that experience I decided to seek out a perfect chair to take with me to concerts. Fortunately, I have a Father-In-Law (Dave Flower) who is a rather brilliant carpenter. I measured up my ideal chair and Dave built it for me. As you can see in the photos, it is extremely elegant and also folds up ingeniously to slip behind the driver's seat in the car.
In folded mode...
It's also possible to carry on public transport. Could you benefit from a made-to-measure musician's chair? If you're interested, send me a mail through the contact form and I'll pass your message on to Dave.
Being modelled!