Expression

Indications instructing the player to put special emphasis on notes.

Intervals

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

Intervals

Two notes played together, usually in one hand but sometimes in both, whose distance is the interval of a 3rd of any quality.

Expression

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

Intervals

A series of any amount or quality of blocked 3rd intervals that are played in one hand, and where both notes move up or down in parallel motion.

Meter

An Italian term meaning "delaying"; an indication instructing the player to decrease speed, often gradually.

Expression

A type of articulation indicating the player to play short and light; notes not held for their full value.