Lossless music refers to a music format in which audio files do not lose sound quality during transmission and storage.

Traditional audio compression formats (such as MP3) use lossy compression algorithms to reduce file size, but this will result in a certain degree of sound quality loss. In contrast, lossless music formats (such as FLAC, ALAC, WAV, etc.) can reduce file size while maintaining audio quality by using lossless compression algorithms. Lossless music files are characterized by retaining all details and dynamic range of the original audio, providing higher sound quality and more accurate audio restoration. This makes lossless music widely used in professional audio production, high-fidelity sound systems, and music lovers with higher requirements for sound quality.