Discover the story behind the Young Sherlock theme song: Kasabian reimagines their 2011 hit “Days Are Forgotten” with a new, raw version for the Guy Ritchie series.
When the opening credits of Young Sherlock first appear on screen, every indie rock fan likely jumped out of their seat. An unmistakable guitar riff and a raspy voice transport us back fifteen years, yet subtle differences make us question our memory of that iconic hit.
Your instincts are correct: the Young Sherlock theme song is indeed one of Kasabian’s greatest successes, Days Are Forgotten. However, for this occasion, the band has released a slightly different version, tailor-made for the spirit of the series.
You can listen to the new version of Days Are Forgotten, reimagined for Guy Ritchie’s Young Sherlock soundtrack, below:
The Collaboration: A Bridge Between Past and Future
As soon as Young Sherlock premiered on Amazon Prime, Kasabian proudly shared the collaboration on Instagram, fueling fan excitement:
Honoured to be part of the Sherlock Holmes legacy.
Days Are Forgotten, has been reimagined for 2026 as the main theme of Young Sherlock on Prime Video . Streaming from today!
You’ll be hearing it live, all summer, from fields and mosh pits 🔊🔊🕵️
This new version of Days Are Forgotten possesses a younger grit and a more driving tempo—a character that perfectly suits the fast-paced energy of the series. Looking closer, the choice to rework a past hit rather than produce an entirely new track is a faithful mirror of Guy Ritchie’s own work in this series: reimagining Sherlock Holmes during a youthful phase never fully covered in Conan Doyle’s literature.
This temporal shift fills the series with food for thought and theories on how the established Holmes lore connects with this younger iteration—from the heavy psychological legacy of his family and his father’s dark role to the sister re-emerging from the past and the original symbiosis between Sherlock and a young, unprecedented James Moriarty. It is a deep dive we recommend taking once you have finished the series and can reflect with a clear mind.
Why “Days Are Forgotten” is the Perfect Song for a Young Sherlock
The original track, featured on the album Velociraptor!, was a psychedelic anthem about the struggle to be seen and the weight of the past. In the lyrics of Days Are Forgotten, Sergio Pizzorno describes an imaginary confrontation between a new and old version of himself—two halves pointing in opposite directions, seemingly at war. It feels almost like a prophecy of what is soon to happen between the young Sherlock and his “friend” Moriarty.
Hey son I’m looking forwards
You’re aiming backwards, of this I’m sure
Have you had enough?
Are you feeling rough?
Does your skull hurt?
Well if it’s war…
For the Sherlock Holmes portrayed by Hero Fiennes Tiffin—a nineteen-year-old rebel struggling against his family’s reputation and his own restless mind—the lyrics take on a new, literal meaning. The “Young Sherlock Version” strips the song of its polished 2011 production, opting for a dirtier, “unfiltered” sound.
This reflects the show’s premise: we are not yet seeing the refined Baker Street detective. We are seeing a “work in progress”—a Sherlock who is loud, impulsive, and adrift. Yet, the seeds of what is to come are already visible: Sherlock discovers his moral conscience before our eyes, along with his natural inclination to solve riddles without causing harm. It is the image of a solitary genius grappling with a world that too easily yields to the temptation of power and criminal profit.
The Weight of Forgotten Days
Ultimately, the Young Sherlock theme song mirrors the imaginary bridge between the Sherlock we know and the one we are meeting now. Even the title, Days Are Forgotten, seems to point the way. The past is left behind as Sherlock Holmes rises from the ashes of his wild youth, finally projected toward a more solid and conscious future.
Just as Kasabian took a piece of their own history to make it relevant and vibrant for a new generation, Guy Ritchie has taken a literary legend we thought we knew and made him raw, unrefined, and evolving. It is their way of offering a musical reflection of the Young Sherlock operation: a sonic manifesto of a character still finding his form.
