Intervals

Sharps, flats and naturals that do not appear in a key signature.

Expression

Indications instructing the player to play gradually louder (crescendo) or softer (diminuendo).

Notation

A type of notation that uses two standard five-line staves combined together with a brace; usually indicating right hand and left hand notes.

Texture

A type of texture where one hand plays a series of notes that are mimicked in the other hand.

Notation

Additional lines added above or below the staff in order to place very high or very low notes that wouldn't normally fit on the staff.

Scales

Commonly used diatonic scales with the following sequence of intervals: whole, whole, half, whole, whole, whole, half.