MP3 stands for Moving Pictures Experts Group, Standard One, Audio Layer 3; it was developed to compress audio for storage and playback on digital devices. It essentially works by stripping out or hiding recorded sounds that are near, or beyond, the threshold of human hearing.
MP3 is a digital music format for creating high-quality sound files. It has transformed the way people buy and listen to music. The great attraction of the MP3 format is its ability to compress files, making it a convenient, versatile and very popular way of storing music.