Terms - O
O
Ob.
obbligato
obbligatorio
ober
obligat
obligatoire
obligatory
obligé
oblique motion
oboe
oboe d'amore
oboe da caccia
ocarina
octatonic scale
octave
octave bass clef
octave clef
octave designation
octave treble clef
octavo
octet
octuple croche
ode
oeuvre
off-beat
Offertory
Office
Officer's Call
ohne
ohne Dämpfer
ohne Instrumente
Oktave
Oktavflöte
Oktavierende Schlüssel
old Roman chant
old-time music
oliphant
ondes martenot
one hundred and twenty-eighth note
one hundred and twenty-eighth rest
one-line
Op.
open
open fifth
open form
open roll
opera
opéra bouffe
opera buffa
opera comica
opéra comique
opera seria
opera-ballet
operetta
ophicleide
Opp.
opus
oral tradition
oratorio
orchestra
orchestra bells
orchestra pit
orchestration
ord.
ordinario
Ordinary
organ
organ point
organ verset
organal style
organistrum
organology
organum
ornament
ornamentation
orpharion
ossia
ostinato
ottava
ottava bassa
ottava rima
ottavino
ottoni
ouïe
outer voices
ouvert
oval
overblowing
overstrung
overtone
overture
octavo
[English]
1. A standard size of sheet music that was derived from standard printing practices of the 19th century. Typically, printers would start with a "sheet" of paper that was about the size of an unfolded newspaper (today that is about 25 inches by 30 inches). Folding the paper in half would result in four pages for a "folio" size (about 25 inches by 15 inches). A second fold would create eight pages for a "quarto" size (about 12 1/2 inches by 15 inches). A third fold creates the octavo size (about 12 1/2 inches by 7 1/2 inches). When the paper is trimmed, the octavo size is about 7 inches by 10 3/4 inches. This is sometimes abbreviated as 8vo (pronounced "eight-v-o") or 8°.
2. A generic term for sheet music (typically in the form of a booklet) containing a short choral work. This term comes from the fact that most most popular and liturgical choral works are printed on the octavo size paper (about 7 inches by 10 3/4 inches). This sheet music generally contains all of the vocal parts with the piano accompaniment. In the case of a cappella music or music that is accompanied by other ensembles where piano accompaniment is not needed, the octavo will often include the the piano accompaniment for rehearsal purposes.
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Last Updated: 2016-06-06 00:00:24