This side of the album is known as the Jack Back Project and was also released independently as a mixtape titled the Jack Back Mixtape, preceded by the release of the song 'Overtone'. The latter is credited to Jack Back, which Guetta revealed to be his alias and as a means to release more dance music alongside his pop collaborations. Released as a double album, the collection features commercial pop collaborations on the first disc, whilst disc two features underground house music akin to Guetta's starting roots as a DJ. Cover for side two of the album which was independently released as the Jack Back Mixtapeħ is the seventh studio album by French DJ and record producer David Guetta, released on 14 September 2018 by What a Music, Parlophone and Big Beat Records.