"I was the principal trumpet player for a British military band for 22 years. I survived that 22 years due to my sound, style and technique but always suffered with very poor stamina and my range suffered due to my poor endurance. I’ve spent painstaking years trying to resolve my embouchure issues, which I’m confident is due to the curvature of my teeth and my underbite, as a result when using a regular mouthpiece the rim cuts into my lip at 2 o’clock and 10 o’clock, cutting off the blood supply causing my issues. This mouthpiece as resolved all my issues, I never tire and my range is so much better, before I couldn’t guarantee a top C,I can now guarantee a double G. Thanks so much Dr Dave this mouthpiece as changed my life and I never enjoyed playing the trumpet more." -Stephen L.