What is the typical tempo marking for an allegro piece in musical compositions?

The typical tempo marking for an allegro piece is defined as being fast, generally ranging from 120 to 168 beats per minute (BPM). This tempo is often associated with lively and cheerful music, making it suitable for various compositions that aim to convey energy and movement. Allegro serves as a directive for musicians to play at a brisk pace, which can enhance the overall dynamism and excitement of a piece.

In the context of the options provided, the definition of allegro aligns well with the range specified in the correct choice, while other options represent different tempos. For instance, the first option refers to a slow tempo, which would be inconsistent with the vibrant nature of allegro. The second choice describes a medium tempo, which is less aligned with the connotation of speed and liveliness associated with allegro. Lastly, the fourth option suggests a very fast tempo that exceeds the typical upper limit for allegro, as it veers into a more extreme classification of tempo.