Genuine music is legal music officially authorized by the copyright owner. The quality of this kind of music is generally quite good. There are two types of high-quality music. The first is legal music with higher sound quality that has been officially authorized by the copyright owner, and the other may be illegal music with higher sound quality that has not been authorized by the copyright owner. Another understanding of high-quality music generally refers to music in lossless audio formats such as APE\FLAC\WAV compared to lossy audio formats such as MP3.