Developmental Stages

Treble Voice

100

These 2 voices are most commonly written on the treble clef.

Soprano and Alto

200

This voice sits between soprano and alto.

Mezzo

300

Treble singers often begin to transition out of the child voice during this age range.

11 to 13

400

Most treble singers tend to settle into their post-change voice during this age range.

14-16

500

Treble singers tend to experience these 4 stages during voice change.

Stage 1: Prepubertal Stage 

2A: Pubescence Stage 

2B: Puberty Stabe 

3:Young Adult

Range and Tessitura

100

This is the general range of a first-grade singer.

C4-D5

200

A third-grade singer can usually sing comfortably within this tessitura.

D4-C5

300

A tenor/bass singer experiencing the cambiata stage can usually access this general range and tessitura.

Range: F3-C5 

Tessitura: A3-A4

400

These are the general ranges of a fully-changed soprano 2 and alto 1.

S2: C4-G5 

A1: A3-E5

500

These are the general ranges of the newly-changed baritone and a high school bass 1 (baritone).

New: G2-C4 

HS: G2-D4

Pedagogy

100

Tenor/bass singers should continue to utilize this part of their voice throughout adolescence.

Pure upper register

200

Singers on the verge of pubertal voice change will often demonstrate this noticeable difference.

Change in the speaking voice

300

Vocal development tends to peak in these grades.

5th, 6th, 7th

400

Changing voices should be encouraged to sing in ways that utilize these muscles.

CT and TA muscles

500

Effective repertoire for changing voices often uses this voicing.

Mixed voices

Tenor/Bass Voice

100

These 2 voices are most commonly written in the bass clef.

Tenor and bass

200

This voice sits between/part of tenor and bass.

Baritone

300

Tenor/bass singers begin to change or transition from the child voice during this age range.

7th grade (12-13)

400

Most tenor/bass singers settle into the post-pubertal voice during this age range.

8th grade (13-14)

500

These are the 2 primary transitions that tenor/bass singers tend to experience during voice change.

First: Cambiata

Second: Baritone

Physical Change

100

This is the size of an infant larynx as compared to an adult larynx.

Infant is 1/3 size of adult

200

As an infant matures into early childhood, the larynx changes in these ways.

Larynx descends and cartilages strengthen

300

The tenor/bass larynx changes shape during puberty in these ways.

It thickens and grows and has an anterior protrusion at the thyroid notch.

400

These are the potential lengths of the vocal folds after voice change. (Give both measurements.)

M: 1.6 cm

F: 1 cm

500

During childhood, the laryngeal anatomy experiences this primary change.

Cricoid cartilage descends from level of C4 vertebra to level of C6