Thanks for answering me. ja sorry i was unclear, well if i practice blowing with only the neck i'm fine, its easy, the sound is good and i get a more or less good A. but as soon as the horn is attached i can't get the low notes to play very easily(goes right into altissimo), and when i finally get it i get squeeks and whistles halfway thru a scale. With the original mouthpiece i never had that problem. The only problem was that the tip opening was a bit large (at least i think) so i had a hard time and had to pinch hard with my mouth to make it play, but i never go those squeeks and whistles nor that problem of going off into altissimo which drives me crazy! I've used reeds vandoren 1 1/2 and 2's, doesn't seem to make that much difference. I will keep working on it with this Selmer mouthpiece and see if it will change but i just wondered if maybe it's not a good combination with this particular sax.