Meter

Sometimes called upbeats or pickup notes; a note or series of notes that precede and give stress to the first downbeat of a piece.

Expression

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

Rhythm

8th notes whose lengths are increased by half; equal to three 16th notes.

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.

Expression

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

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.

Expression

An indication instructing the player to play very softly; softer than piano.

Expression

An indication instructing the player to play softly.

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.