- Pitch
- How high or low a sound is (our perception of frequency).
- Duration
- How long a sound or silence lasts; patterns of durations create rhythm.
- Frequency
- The number of vibrations per second in a sound wave, measured in hertz (Hz).
- Octave
- The interval between two notes where one has double or half the other’s frequency. For example A (110Hz) to A (220Hz).
- Staff
- Horizontal lines (usually five) used to notate pitch.
- Notehead
- The oval part of a note placed on a line or space to show pitch
- Treble Clef
- A stylized \"G\" placed on a staff, usually used by higher-pitched instruments and voices.
- Bass Clef
- A stylized \"F\" placed on a staff, usually used by lower-pitched instruments and voices.
- Grand Staff
- Treble and bass staves joined by a brace and a barline. Common for keyboard music like piano.
- Ledger Line
- A short horizontal line to help notate pitches that fall above or below a given staff.