Rhythm

Indications placed above or below notes instructing the player to hold those notes longer than their original notated length.

Meter

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

Hand and Finger Techniques

A technique that requires the player to pick up and move their hand to a new position; usually from a five finger scale to another.

Expression

Also called the damper pedal, it is the rightmost pedal on the piano and used to sustain notes by moving the dampers away from the strings.

Rhythm

Symbols indicating that two notes are to be played as one with the value equal to their sum.