Karlheinz Brandenburg used a CD recording of Suzanne Vega's song "Tom's Diner" to evaluate and refine the MP3 compression algorithm. This tune was picked out as a consequence of its nearly monophonic mother nature and vast spectral articles, which makes it much easier to listen to imperfections within the compression https://edition.cnn.com/TECH/computing/9902/05/ryko.mp3.idg/index.html