Allegro
ALLEGRO (an Italian word, meaning "cheerful," as in Milton's poem), a term in music to indicate quick or lively time, coming between andante and presto; it is frequently modified by the addition of qualifying words. It is also used of a separate piece of music, or of a movement in a sonata, symphony, etc.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)