Pitch
Pitch and octave designation of Middle C
C4
Note enharmonic to Cx (double-sharp)
D
Key Signature of G Major
F#
Two staves, treble and bass clef, usually connected by a bracket
Grand staff
The size of an interval (distance between notes, including the top and bottom note)
Quantity
Pitch and octave designation of note on middle line of treble cleff
B4
One half step above G#
A
Note that is "Fa" in F major
Bb
On the middle line, do stems go up or down?
Down
An interval where both notes sound at same time
Harmonic
Pitch and octave designation of note on middle line of bass cleff
D3
One whole step below Eb
Db (or C#)
Key Signature of Eb Major
Bb, Eb, Ab
Two notes that sound the same but are spelled differently
Enharmonic
An interval where notes sound one after the other
Melodic
Pitch and octave designation of note on middle line of tenor cleff
A3
Three half steps below C#
Bb (or A#)
Note that is "Ti" in B major
A#
A specific note in a specific octave
Pitch
An interval spanning more than an octave
Compound
Word spelled by three ledger lines above treble and below bass clef
ACE
Three whole steps above Ab
D
Key Signature of Cb Major
Bb, Eb, Ab, Db, Gb, Cb, Fb
A note in any octave (ie: all "A"s)
Pitch-class
An interval spanning one octave or less
Simple