Singing voice is a term used to describe the range of vocal sounds that a person can produce. The crossword solutions for singing voice include ALTO (4 letters), falsetto (8 letters), BARITONE (8 letters), TENOR (5 letters), BASS (4 letters), SOPRANO (7 letters), BASSO (5 letters), CONTRALTO (9 letters) and mezzo (5 letters). ALTO is the lowest female singing voice, while falsetto is a light, airy vocal sound. BARITONE is a male singing voice between TENOR and BASS, while TENOR is the highest male singing voice. BASS is the lowest male singing voice, while SOPRANO is the highest female singing voice. BASSO is a low-pitched male singing voice, while CONTRALTO is the lowest female singing voice. Mezzo is a female singing voice between SOPRANO and ALTO.