allegro
A fast, lively tempo, typically 120-156 BPM.
In Depth
Allegro is one of the most frequently used tempo markings in Western music. At 120–156 BPM, it drives the majority of opening movements, finales, and standalone fast pieces. The word literally means cheerful or merry in Italian, reflecting the bright energy the tempo typically conveys.
Most classical sonatas, symphonies, and concertos feature at least one allegro movement. Mozart and Haydn used it extensively for their lively first movements. In modern usage, allegro has become nearly synonymous with fast, though historically it described mood as much as speed.
Mozart once wrote an entire symphony (No. 36, the Linz) in just four days, with its Allegro vivace first movement composed in a single sitting.