I was always concerned about bending music wire and it losing its proper "spring" temper at the locations of the bends. I was never really sure what to do about it. I found this article about the subject and thought I would place it here in the hopes someone might find it useful.
http://www.passoaring.us/Articles/Heat_Treat_Wire.htm
http://www.passoaring.us/Articles/Heat_Treat_Wire.htm