Fatal Equation is a romantic suspense novel with a real companion soundtrack. The music isn't background - it's woven into the story, the characters, and the world they inhabit.
Ali Kurmi is a songwriter. Music is how he thinks, how he loves, and how he processes the world. When Gethyn Jones wrote Fatal Equation, he didn't just describe Ali's music - he wrote and recorded it.
The result is a companion soundtrack by fictional band Coolstar - real songs, available to stream, that exist within the world of the novel. Read a chapter. Then listen to the track. The story deepens in a way that prose alone cannot achieve.
This is a genuinely rare thing in fiction: a novel with a real, listenable soundtrack created by the author - himself a composer and songwriter whose career began writing TV signature tunes in the 1970s and 80s.
The Coolstar tracks are available to stream now. Listen before you read, while you read, or after - each song adds a new dimension to the story.
All books are standalone. Start anywhere - or read in order for the full journey.
Laura O'Brien falls for Ali Kurmi - a songwriter whose music becomes the heartbeat of their relationship. But danger is closing in from two directions. Available with a full companion soundtrack by Coolstar.
eBook · Paperback · Audiobook
Order on AmazonAli's music career is finally taking off - Coolstar is getting streamed big-time. But Stephanie is watching. A darker second chapter with the music still at its heart.
Released April 2026
Order on Amazon"The music is amazing - you don't know what to expect next! Do Coolstar actually exist?"- paulmonomixboy, Amazon Review
"A welcome breath of fresh air - a moving tale of love AND a fitting musical soundtrack."- S.D.S., Amazon Review
"This has the making of a great TV drama and the surprise inclusion of six superb musical tracks by musicians collectively called CoolStar make this a good story to read."- J. Cross, Amazon Review
"Bold take on an underpopulated genre."- Neil McCormick, Daily Telegraph