About MP3 (MPEG Layer 3)
MP3 (also known as MPEG-1 Audio Layer III) is a coding format for digital sound. A audio storage protocol that stores music in a compressed format with next to no loss in sound quality.
MP3 (or mp3) as a file format generally assigns files containing a basic stream of MPEG-1 sound and video encoded data, without different complexities of the MP3 standard. MP3 is the most widely recognized MPEG format for audio files.