After playing on the denis wick bsm4x mouthpiece on my Yamaha 321 I feel my high regester improved as well as my stamina. I feel that the bsm4x is an improvement over the 4ay.

The difference between the denis wick 4ay mouthpiece for the Yamaha euphonium and bsm4x is a different rim shape which makes the bsm4x feel more comfortable. Also the cup is just a little less shallow than the 4ay. Is that for the high register? They both fit the Yamaha lead pipe.

If anyone has the elusive and mythical Yamaha 321 5 th valve I would like to buy it

I would like to buy the elusive and mythical Yamaha 321 5th valve if anyone has it and wishes to sell it

I do not know how to read pm email me at soarcj@aol.com

Now we are talking! Price pictures and condition

Want to buy used Yamaha 321 4 valve euphonium and try it out so that is why I stated Southern California has to have case

If I bought a trigger kit, where in Southern California would you have it installed?