It is generally a phrase composed of 4 bars and 8 bars. A phrase is a basic structural unit with characteristics that constitutes a piece of music.
 Phrase refers to the beat of a piece of music, which is a basic structural unit with characteristics that constitutes a piece of music. In songs, the phrase is easier to understand. Especially songs with square structure. For example, four lyrics correspond to four phrases with breath between them.
 It can express a relatively complete meaning, just like a sentence in an article, so it is called a phrase. In a word, not enough for an article. One phrase cannot be a piece of music. But a sentence, a phrase, can express a certain meaning. It's not like half a sentence, half a phrase, and I can't figure out what to say.
 The phrase in instrumental music, some of which are similar to songs, is relatively clear. But sometimes it is not so clear at a glance. This is the phrase of "instrumental music". However, in any case, any music is composed of actually existing phrases.