Chorus Pedals
As the name suggests, Chorus pedals create a symphony of voices by dividing a single voice, multiplying it, and adding a slight micro delay to each voice. This produces a full bodied muli-voiced sound that bears a resemblance to a choir singing the same note with slight variations. Chorus is a shimmering effect that can be used effectively on just about every instrument, including vocals (Phil Collins), guitar (The Police or U2), bass (Jaco), and keys (too many to list).