Is “Fugue” a Scrabble word?

1.A contrapuntal piece of music wherein a particular melody is played in a number of voices, each voice introduced in turn by playing the melody.

2.Anything in literature, poetry, film, painting, etc., that resembles a fugue in structure or in its elaborate complexity and formality.

3.A fugue state.

1.To improvise, in singing, by introducing vocal ornamentation to fill gaps etc.