In 2015, the music world experienced a seismic shift with the release of . While the standard version of the album broke nearly every sales record in existence, serious collectors and audiophiles sought out the Target Deluxe Edition , which featured exclusive tracks not available on standard physical or digital releases.
As a Free Lossless Audio Codec (FLAC) file, the album retains the full depth of Adele’s vocal performance, which critics described as "brassy yet husky" and "smoky yet clarion".