Weeks 9-10 · rhythm · short-tone articulation
Land eight short notes, one per click, without any of them drifting.
The rule
pass: 7/8 onsets in ±90ms · ±35¢ · 4/5
Eight clicks at 80 bpm; you sing one short note per click. Each spike is a sung onset — emerald inside the ±90ms tolerance band, grey when it slips. The wide grey bar shows the second failure mode: the note isn’t actually staccato. Held more than a fraction of a beat and the count fails even if it landed on time.
Hear it first
Three references — clean staccato sits crisply under each click. Drift starts right but slides late by note 6. The held version stays on the beat but the notes run together (legato by accident, not staccato). All three teach the ear what to listen for in your own take.
What’s happening. A staccato note is breath + onset + release inside one beat — three coordinated actions for a single articulation. The vocal folds adduct, vibrate briefly, then release cleanly without a glottal slam. Most untrained singers can land 4-5 in a row before the breath support degrades and notes start dragging or running together; trained singers can hold 8 at 80 bpm without the cumulative drift that this drill catches.
Why ±90ms and ±35¢ together.A late note that’s in tune fails; a perfectly-timed note that’s flat fails. Real articulation training requires both meters to clear — otherwise you can fool the rhythm meter by sliding to pitch after the onset, or fool the pitch meter by holding past the beat. 90ms is roughly an eighth of the 750ms beat period at this tempo — tight enough that you can’t guess.
Why this is a bridge lesson. Pulse-clap proved your internal pulse exists. Staccato-in-tempo is the first place the pulse meets pitched phonation — every articulation lesson downstream (vowel-modification-ascent, register-event-detection, melisma timing) needs both clocks running at once. Get the coordination clean at 8 notes here, and faster passages stop feeling like luck.
Session ahead
5 trials · 4-beat count-in → 8 staccati at 80 bpm · pass 7/8 per trial, 4/5 promotes.