Voice type in women. The size and development of adult lungs also changes what the voice is physically capable of doing. From the onset of puberty, the human voice is in an in-between phase where it is not quite a child's voice nor an adult one yet. This is not to suggest that the voice stops changing after puberty. Different singers will reach adult development earlier or later than others, and as stated above there are continual changes throughout adulthood as well. Treble can refer to either a young female or young male singer with an unchanged voice in the mezzo-soprano range.
Voice type high. Voice type A voice type classifies a singing voice by vocal range, vocal weight, tessitura, vocal timbre, vocal transition points ("passaggia") like breaks and lifts, and vocal register. Voice classification was developed for European classical music and seldom applies to other kinds of singing; voice classification is in the opera to pair roles with voices. Several different voice classification systems are available to identify voice types, including the German "Fach" system and the choral music system among many others; no system is universally applied or accepted. Voice classification is a tool for singers, composers, venues, and listeners to categorize