A second album titled Xperiments From Dark Phoenix released in that August, containing unreleased music from the film, which garnered generally favorable response.

[3][4] Zimmer in September 2018, explained that conversations with director Ron Howard had convinced him to not keep to a "blanket" view and avoid an entire genre, instead focusing on waiting for the right story.

Zanobard Reviews called it as "a welcome expansion on the themes and compositional style of his original Dark Phoenix score",[8] whereas Filmtracks.com wrote "even those most ardent Zimmer skeptics can assemble a viable suite of the composer's easy-listening anthemic mode from the two albums".

It’s a bold and dramatic piece, but listening to it I get no real sense of heroism or even just hope, and that’s not good for a superhero theme [...] The album spends most of its runtime building up (both tonally and thematically) to something, but there’s basically no release for it.

"[11] James Southall of Movie Wave wrote "Dark Phoenix is a decent enough atmosphere piece, but nothing much more – unless you’re a really big fan of Zimmer’s modern, darker sound".