Beltrami was “desperate” and “not able to capture the essence” of what Warner Bros. and NS Pictures were looking for in the main title theme.
The Marderosians agreed to sign on in exchange for co-writer credits, onscreen credits, and to “retain all of the publishing rights to the composition” should it be selected.
It seems unusual that there is such a dispute over who owns the song, seeing as how this sort of thing is all worked out when the talent is first employed.
As the lawsuit goes on to explain, the Marderosians were approached to write the song in October 2015 by composer Marco E. Beltrami — also listed as a defendant — who was originally hired to write the theme.