Musical articulation is about how we perform a certain note or chord on the piano, and how long it is kept. Compared to the possibilities on strings and winds instruments, we have on the piano relatively few options of articulation. Here are described some of the most common.

See also Chords On Piano 1 p. 55-56, Chords On Piano 2 p. 68-69 og Chords On Piano 3 p. 59-61