octavation
octavating
octavate
interoctave
intraoctave
inverted
intra-octaval
superoctave
C instrument
suboctave
Italian augmented sixth chord
gradation
double
semidiapason
thirteenth
inversion
contra-octave
octaviation
invert
diapason
Tristan chord
chord changes
alveolarization
in altissimo
German augmented sixth chord
twelfth
multioctave
Fr⁺⁶
contrabass
double-bass
equal temperament
seventeenth
tenoritone
tridiapason
replicate
loco
eightvo
univocal
heckelphone
hexatone
French augmented sixth chord
basset oboe
broken chord
perfect interval
compound interval
Ger⁺⁶
si
fifteenth
sforzando
quarter tone