Weeks 5-6 · technique
Sustain /a/ with a free jaw and forward tongue.
Per Estill body-use, jaw and tongue tension distort vowels and cap range. We play a comfortable pitch — you sustain “ah”, then self-rate jaw drop and tongue placement. Camera mirror optional.
5 trials. Pass per trial = 4s steady /a/ (SD ≤ 30¢, drift ≤ 8 dB) AND both self-ratings ≤ 2. Mastery: 4/5.