#allegro

• Allegro — A tempo indication in music requiring a fast, lively, and energetic rhythm, structurally situated between moderato and vivace. As a neuter noun, it designates an independent instrumental piece or the first movement of a sonata, symphony, or concerto written in this brisk motion, being an adapted spelling variant of the international term allegro.
• Moderately fast — A tempo and dynamic instruction originating from Italian, used in musical scores to dictate a fairly quick, lively, and light movement, but less rapid than that indicated by 'allegro'. As a noun, the term designates a musical piece or a movement of a larger composition (such as a symphony or a sonata) written in this graceful and animated pace.
• Fast — A tempo and dynamic instruction originating from Italian, used in musical scores to dictate a fast, cheerful, quick, and lively movement. As a noun, the term designates an independent musical piece or the first movement of a larger classical composition, such as a symphony, a concerto, or a sonata, performed at this brisk pace.
• Very fast — A composite tempo and dynamic instruction originating from Italian, used in musical scores to request a very fast and quick movement. The term combines the brisk 'allegro' base with the intensive modifier 'assai' (very / significantly), placing the execution pace just below 'presto' and giving the piece an impetuous, highly energetic character.
• Fast, but not too much — A composite tempo and dynamic instruction originating from Italian, used in musical scores to request a fast and lively movement but tempered, literally translated as 'fast, but not too much'. This compositional caveat instructs performers to maintain the bright, alert character of the 'allegro' pace while avoiding excessive speed that could jeopardize the clarity of melodic details, expressiveness, or technical precision of the passages.
• Assai — A musical term of Italian origin used as a tempo or dynamic modifier, meaning 'very', 'quite', or 'considerably'; it is always placed alongside another movement term (for instance, 'allegro assai' - very fast, 'adagio assai' - very slow) to intensify or nuance the execution speed of a score.