Weeks 1-2 · voice
Hold /u/ — pitch and volume both still.
S4 mastery code from the source report: a 4-second hold with pitch SD ≤30¢ and amplitude drift ≤ 8dB. /u/ keeps the tongue forward and the lips lightly rounded — bel canto’s favourite vowel for steady-tone work because it discourages air leak.
Run the Speaking center lesson first — we tune the sustain target to your natural pitch.
5 trials · hit 5for mastery. Each trial: listen to the pitch, then sing “ooo” on it for 4 steady seconds.