If you like playing octaves watch out for the CX-12. The mouthpiece is extremely wide starting right up front. I play a lot of songs with octaves and can't play the CX-12 in a show without getting really sore jaw muscles. My wife says I have a big mouth, but apparently not big enough to play octaves on the CX-12 comfortably. Everything else about it is great. Bob Williams, HarpSPAH@xxxxxxx