Songs of the Dead by Brandon Sanderson and Peter Orullian.
Introduction
Songs of the Dead by Brandon Sanderson and Peter Orullian is an urban fantasy novel. Jack Solomon, a heavy metal singer based in London, struggles to finish the best song he’s ever composed. He participates in the heavy metal culture centered at the Iron Horse pub. His life becomes complicated once he discovers that London has other levels called strata. The inhabitants of the other strata are threatening to seize control of the upper level. Will Jack be able to save the world?

Summary
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Recommendation
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Links
This is the link to the Goodreads page of Songs of the Dead by Brandon Sanderson and Peter Orullian.
https://www.goodreads.com/book/show/241374552-songs-of-the-dead
My review of Tailored Realities by Brandon Sanderson. The book is a collection of ten science fiction and fantasy stories that are not part of the cosmere universe.
Isles of the Emberdark by Brandon Sanderson. Sixth of the Dusk is a trapper who has magical birds that help him. Dusk must journey to the perilous Emberdark and uncover a vital secret, or his people will lose their freedom to those seeking to seize it.