Joe-I have done a bit of blowing and am very impressed so far: the finish of the piece is beyond reproach, and the intonation on my 62R and responsiveness could not be bettered. Tone on the soprano is a work in progress for me, and although I am not there yet, I feel that I have a fighting chance of getting there with the Open Sky – certainly my sound is now closer to where I would like it to be than it has been with any other mouthpiece – and much closer than with any other mouthpiece that has played even reasonably in tune easily for me! I will be playing my Sop with my big band for the first time tonight- and feeling pretty confident that even it the trumpets exhibit their usual degree of sensitivity and attention to dynamics I will be able to make myself heard. Thanks again. Keep up the good work.