Voice Range Check & Vocal Classification

Singing exercises in the wrong key does more harm than good. If you force a baritone to belt in a high tenor tessitura, the neck muscles constrict, the larynx shoots up, and vocal fatigue sets in within ten minutes.

Vocal cords are living tissue. Just like a cello cannot play violin parts without snapping strings, your voice needs exercises pitched exactly where your vocal folds can vibrate freely.

That is why Time to Sing is built around an intelligent vocal calibration engine. With a simple two-note microphone check, the app identifies your natural sweet spot and transposes every scale, pattern, and riff to match your voice.

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Tessitura vs. Maximum Range

There is a big difference between the highest note you can squeak out on a good day and your tessitura:

• Maximum Range: The absolute lowest rumble and highest squeak you can produce. Singing here continuously leads to strain.
• Tessitura: The comfortable middle 80% of your voice where you can sing with rich tone, clean vowel shapes, and zero throat tension.

Time to Sing calibrates for your tessitura. We want your daily warmups to build strength, resonance, and breath control — not force you into a vocal wrestling match.

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The Six Voice Types in Time to Sing

In classical and contemporary singing, voices are categorized into six standard registers. The app provides tailored exercise tracks for all of them:

Voice Type	Register Group	Typical Tessitura	Character & Sound
Soprano	High (Treble / Female)	C4 – C6	Bright, airy, and soaring. Naturally comfortable above the staff.
Alto	Medium (Treble / Female)	F3 – F5	Warm, rich, and resonant with a grounded chest-voice mix.
Contralto	Deep (Treble / Female)	D3 – D5	The rarest and deepest female voice, with lush, dark lower tones.
Tenor	High (Male)	C3 – C5	Bright, agile, and ringing. Easily navigates the upper passagio.
Baritone	Medium (Male)	A2 – A4	The most common male voice — warm, versatile, and lyrical.
Bass	Deep (Male)	E2 – E4	Deep, grounded, and rumbling, providing the harmonic foundation.

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How the 2-Note Calibration Works

You can take the range check during initial onboarding or anytime later by tapping your voice card inside your Profile.

Here is what happens when you tap Check my voice:

1. The Low Note (Baseline Anchor)

Tap Start and sing an easy, spoken "Ah..." at the lower end of your comfortable speaking range.

• Hold the pitch steady for about 1.5 seconds.
• Notice the circular arc: the glowing progress ring moves only when it detects clean voiced pitch. If you take a breath or pause, the ring patiently waits.

2. The High Note (Sustainable Ceiling)

Take a relaxed breath and sing a clear, sustained "Ah..." on your highest comfortable note.

• Important: Do not scream, push from your throat, or flip into uncontrolled falsetto. Sing the highest note you could happily sustain on stage without making a strained face.
• Once held for 1.5 seconds, the engine locks in your upper boundary.

3. Real-Time Pitch Evaluation

The calibration engine evaluates your pitch stability, calculates your total semitone span, and compares your anchor frequencies against our voice model. It immediately highlights your matching voice type (e.g. Tenor or Mezzo/Alto).

Tap Continue, and the app is instantly tuned to you.

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What Happens to Your Exercises?

Once your range is calibrated, the app adapts behind the scenes:

• Automatic Transposition: Every melodic exercise in the Voice Tuner and For You routine shifts up or down so the root notes sit right in your power zone.
• No Vocal Fry or Squeaking: You will never be asked to hit low growls that drop out of your range or high notes that cause vocal cord swelling.
• First Exercise Preloaded: The moment calibration finishes, your first tailored workout is preloaded into local memory so you can start singing without waiting for slow downloads.

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What If You Are Between Two Types?

Voices rarely fit into rigid boxes. You might have the low notes of a baritone with the bright high notes of a tenor, or the rich warm middle of an alto with soprano extensions.

If the app suggests a type that feels slightly too high or too low:

1. You can manually tap any adjacent voice type on the selection screen.
2. Try a workout. If the high notes feel strained, step down one category (e.g. Tenor → Baritone). If the exercises feel too low and you want more challenge, step up one category.

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Expanding Your Range Over Time

As you practice 5 to 10 minutes every day, your vocal cord flexibility and breath support will improve. High notes that felt tight in week one often become easy and resonant by week four.

When that happens, simply:

1. Open your Profile (tap your avatar from the For You screen).
2. Tap your Voice Card.
3. Tap Check my voice to re-measure your boundaries.

The app will update your tessitura and unlock higher exercise runs as your voice naturally grows.