Editing Embouchure (section)

===Stevens–Costello embouchure===

Stevens–Costello embouchure has its origins in the William Costello embouchure and was further developed by [[Roy Stevens]].<ref>''The Complete Stevens-Costello Embouchure Technique, 2nd Edition'' by Roy Stevens & Bill Moriarity, Amazon Create Space</ref> It uses a slight rolling in of both lips and touching evenly all the way across. It also uses mouthpiece placement of about 40–50% top lip and 50–60% lower lip. The teeth will be about {{convert|1/4|to|1/2|in|mm|0}} apart and the teeth are parallel or the jaw slightly forward.

There is relative mouthpiece pressure to the given air column. One exercise to practice the proper weight to air relationship is the palm exercise where the player holds the horn by laying it on its side in the palm of the hand, not grasping it. The lips are placed on the mouthpiece and the player blows utilizing the weight of the horn in establishing a sound.