How do I turn a Bb trumpet into a C trumpet?

Question

I'm trying to play my trumpet with other instrumets which are in the key of C.

Answer 1

You can either buy a C trumpet, which will be generally as expensive as a regular B-flat trumpet or more. If you don't want to do that, you can always transpose. Since you're playing a B-flat trumpet and reading parts in C, you will have to read one note higher. For example, if you're reading a "D" for concert-pitch instruments, you'll have to play an E. It takes practice to be able to transpose on sight, but it's a necessary skill to play in an orchestra, or to play hymns in church, etc.

Answer 2

You remove 2 flats for the trumpet. Concert G-flat is the trumpet's written A-flat.

Answer 3

Buy a C trumpet.