MP3 file tags are pieces of metadata embedded in an MP3 file that provide information about the audio content. They can include details such as the song title, artist name, album name, track number, year of release, genre, and even album artwork. MP3 tags are used to help organize and identify audio files, making it easier for users to manage their music libraries and for music players to display information about the audio content being played. MP3 tags can be added and edited using various software tools and media players, and can also be automatically generated by some music management software based on audio analysis and online databases. Properly tagging your MP3 files can significantly improve the organization and accessibility of your music library.