An allegro is a piece of music — or one movement inside a longer piece — meant to be played or sung quickly. You meet the word in classical music more than in pop: a symphony may have several parts, and one of them is “the allegro,” the fast one.

An allegro Allegro is是 a piece of music一段音樂 — or one movement inside a longer piece或是一首較長樂曲裡的一個樂章 — meant to be played or sung quickly是要用快的速度演奏或演唱的。You meet the word你比較會 in classical music more than in pop在古典音樂裡遇到這個字，而不是流行音樂: a symphony一首交響曲 may have several parts可能有好幾個樂章, and one of them而其中一個 is “the allegro,” the fast one就是「the allegro」，也就是快的那個樂章。

Musicians also write allegro on the page as an instruction: play this part fast. It is a classroom and score word, a little special; you would not use it for walking quickly down the street.

Musicians音樂家 also write allegro on the page也會把 allegro 寫在樂譜上 as an instruction作為指示: play this part fast意思是這段要快速演奏。It is a classroom and score word這是課堂和樂譜上用的字, a little special有點特別; you would not use it不會用它 for walking quickly down the street來形容在街上走得很快。

Though actually, the Italian word first meant “cheerful” or “lively,” not “fast.” The speed meaning grew out of that lively feeling. Some allegro music is bright, but some is simply quick, and not especially happy.

Though actually不過其實, the Italian word這個義大利文原本 first meant “cheerful” or “lively,”原本的意思是「愉快」或「活潑」, not “fast.”而不是「快」。The speed meaning「快」這個意思 grew out of that lively feeling是從那種活潑的感覺延伸出來的。Some allegro music有些 allegro 的音樂 is bright確實明亮, but some is simply quick但有些只是單純快而已, and not especially happy不見得特別歡樂。