Meter

A time signature where the fundamental beat is subdivided in groupings of three instead of two.

Rhythm

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

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.

Texture

A type of texture where the left hand plays the melody and the right hand plays the accompaniment for an extended period of time.

Expression

A type of articulation indicating the player to play smoothly and seamlessly, with the notes slightly overlapped.

Meter

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

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.