Check out these syllables trombonist Weston Sprott uses to achieve his intended range. (Note from JH: I’d be cautious about using “syllables” because that can lead to “speaking” with your embouchure. Instead, think of them as mouth shapes, or tongue shapes instead, that way you can focus on the air flow and not the sound […]

via How Tongue Placement Relates to Range: Weston Sprott — Essential Trumpet Lessons