In music theory, voicing refers to two closely related concepts:
How a musician or group distributes, or spaces, notes and chords on one or more instruments
The simultaneous vertical placement of notes in relation to each other;[5] this relates to the concepts of spacing and doubling
It includes the instrumentation and vertical spacing and ordering of the musical notes in a chord: which notes are on the top or in the middle, which ones are doubled, which octave each is in, and which instruments or voices perform each note.
^Corozine, Vince (2002). Arranging Music for the Real World: Classical and Commercial Aspects. Pacific, MO: Mel Bay. p. 7. ISBN0-7866-4961-5. OCLC50470629.