Voice

The word "voice" can be used to refer to:

In sound:

Human voice, sound made by a person
Singer, or vocals, a term used in music recording to signify that an artist has contributed vocals to a song or album
Singing refers to the art of making music with the voice
Voice acting, providing a voice for some sort of media without being visible
human voice as an instrument, a term for instrumental compositions for the human voice
The register of a line of counterpoint, including soprano, alto, tenor, bass. These terms come from the section of the choir to which a line would be given (the soprano voice would have been given to the soprano voices)
In synthesis, a section of components or code producing a monophonic signal. For polyphony, several voices are needed
In phonetics and phonology, a phone or phoneme is said to be voiced if it is produced with the vocal folds vibrating. See voice (phonetics), phonation
Auditory hallucinations: hearing voices
Voice message, a signal in various media (e.g. radio) which carries the sound of a human voice
Bird song refers to the voices and calls of birds

In literature and language:

Writer's voice, a voice one hears in the mind when reading literature, also called
point of view, the tone of a piece of writing
Grammatical voice, in grammar, is a verb-form that indicates the relationship between the subject and the action expressed by the verb

In popular culture (chronologically):

Voice, a plot element of the Dune universe
Voices was the Hall & Oates album released in 1980
"Voices" is the theme song from the 1994 anime series Macross Plus, performed by Yoko Kanno and Akino Arai.
"VOICES" is a Bangalore based NGO. VOICES stands for 'Voices of Individuals and Communities Empowering Society through Vehicles of Information and Communication Enabling Social Change'
The Voices are the name of a pre-teen singing group of the early 1990's
The Voice is a story starring The Shadow
"The Voice" is a reference to several singers, such as Garth Brooks, Jackson Browne and Mariah Carey, as in "The Return of The Voice"
Voice is the title of a album released in 2005 by the British singer Alison Moyet.

Miscellaneous: