I have a Holton bass trumpet that I sent to the factory back in the 50's they changed the tubing. From B flat to C. I did this so I could read off lead sheets while playing keyboards. I'm no 80 years old and need to play off B flat trumpets. Any way I can be able to switch back and forth?
thank you trailer801 Rapid City SD on the road 50 years. now going to play in senior dance band