Under the Fragmented Sky is the sixth studio album by Lunatic Soul, the side project of Riverside bassist, vocalist, and songwriter Mariusz Duda.

Lunatic Soul's previous album, Fractured, was released in 2017 following the death of both Riverside co-founder and guitarist Piotr Grudziński as well as Duda's father in 2016.

With around 90 minutes of music written and recorded, Duda initially considered releasing Fractured as a double album, before deciding instead to trim the album down to around 55 minutes, removing any instrumental tracks (the first Lunatic Soul album to do so), and focusing on the songs which sounded the most different to previous Lunatic Soul releases.

Initially, Under The Fragmented Sky was conceived as a supplementary mini-album to Fractured, consisting of mostly instrumental, unreleased music which did not make the record.

[2] However, by January 2018 the project had grown into a full length album,[3] with additional recording sessions taking place between December 2017 and February 2018 at Serakos studio, Warsaw.