Loss of tags during transmission, incomplete tag information of downloaded songs, etc.

1. Tags are lost during transfer: the tag information of the file is lost. When users transfer music files from one device to another, the information of the file may be lost, including the tags of the songs. information.

2. The downloaded song tag information is incomplete: The song is downloaded from the Internet. It is possible that the tag information on the website is incomplete, or there is no tag information at all, which results in the music you see without tags. .

The music tag is a given category or attribute. For example, the label for a song can be sad, popular, theme song of a certain movie, etc.