SSAA (choir)
Encyclopedia
SSAA refers to a choir composed of two distinct Soprano
Soprano
A soprano is a voice type with a vocal range from approximately middle C to "high A" in choral music, or to "soprano C" or higher in operatic music. In four-part chorale style harmony, the soprano takes the highest part, which usually encompasses the melody...

 sections and two distinct Alto
Alto
Alto is a musical term, derived from the Latin word altus, meaning "high" in Italian, that has several possible interpretations.When designating instruments, "alto" frequently refers to a member of an instrumental family that has the second highest range, below that of the treble or soprano. Hence,...

sections, or music composed for such an ensemble. In an SSAA choir, First Sopranos sing the highest musical line, followed by Second Sopranos, First Altos, and Second Altos on the lowest line.
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