音乐术语Allegretto和Tempo是什么意思?

Allegretto means "a little fast" while Tempo means the original speed of the music. Here are some other musical terms for different speeds: Grave (very slow), Largo (slow), Lento (slow), Adagio (slow), Adagietto (a little bit faster than Adagio/Largo), Larghetto (a little bit slower than Andante), Andante (moderate), Andantino (a little bit faster than Andante), Moderato (moderate), Allegro (fast), Vivo/Vivace (very fast and lively), Presto (very fast), and Prestissimo (extremely fast). A Tempo means to return to the original speed, while Rubato means to play with flexible rhythm. Ritardando/rit/ritard means gradually slowing down the tempo, while Ritenuto/riten means suddenly slowing down the tempo. Rallentando/rall means gradually slowing down, while poco meno mosso means a little bit slower. Accelerando/accel means gradually speeding up, while poco più mosso means a little bit faster. Ad libitum/ad lib means freedom in tempo and rhythm (usually indicated by a written-out section with few or no rhythmic markings).