The Song You Can’t Find But Hear Everywhere
The song started like countless others on television: right after a commercial break, as tension built on the reality show Love Island. Seven contestants waited to hear who would be eliminated while a haunting pop vocal floated in the background: “Twisted nightmare / All my love’s lost in your sin.”
It sounded familiar, polished, dramatic and perfectly matched to the scene. But when viewers tried to identify it, they ran into a mystery. The track wasn’t on Spotify, Apple Music, YouTube or SoundCloud. Even Shazam drew a blank.
Eventually, the song surfaced: “Love’s a War,” composed by Hendric Buenck, a composer based in Los Angeles. Yet solving the mystery only revealed something bigger. The song belonged to a vast and largely invisible musical ecosystem known as sync music tracks created specifically to accompany video.
Most people hear this music dozens of times every day without realizing it. It plays under reality-TV eliminations, in YouTube tutorials, TikTok clips, corporate videos, commercials and podcast ads. In an age dominated by video, sync music has quietly become the most ubiquitous soundtrack of modern life.
What Exactly Is Sync Music?
“Sync” is shorthand for synchronization licensing: music written or licensed to be paired with visual media such as film, television, advertising, video games and social media.
The concept is not new. Production libraries have existed since the mid-20th century, supplying broadcasters with ready-to-use tracks for news programs, documentaries and advertisements. But the digital era has transformed the scale of the business.
Today, the explosion of online video has dramatically increased demand for background music. Global synchronization licensing generated more than $650 million in 2024, according to the International Federation of the Phonographic Industry.
In the United States alone, sync licensing accounted for over 32% of music publishing revenue in 2023, underscoring how central it has become to the industry’s economics.
At the same time, production music libraries have ballooned in size. Some platforms host hundreds of thousands even millions of tracks designed to instantly match almost any mood, genre or narrative beat.
In short: the more video the world produces, the more sync music it needs.
The Algorithmic Soundtrack of the Internet
The rise of sync music parallels a broader cultural shift. The internet has turned video editing into an everyday activity. From social media creators to corporate marketers, millions of people now produce videos that require music.
Music libraries such as Epidemic Sound, Audio Network, APM Music, and Extreme Music have emerged as key suppliers. Platforms like YouTube and TikTok host their own massive audio libraries, enabling creators to add music instantly to videos.
This ecosystem has produced a distinctive sonic aesthetic: music designed to be emotionally effective but unobtrusive. Tracks are often structured with clear intros, climaxes and endings so editors can cut them easily into scenes.
“Library music was crafted to suit the needs of people editing film,” says James Barker, an executive producer on the U.S. version of Love Island. “Now pop music is increasingly being shaped to work with video.”
That shift reflects the growing importance of short-form social media. Songs are often engineered around memorable 15- or 30-second “moments” that can go viral on TikTok or Instagram.
The result is a feedback loop: the editing logic of video is influencing the structure of mainstream pop.
Inside the Factory of Background Music
To see how sync music is made, one can visit Bleeding Fingers, a scoring studio partly run by Oscar-winning composer Hans Zimmer and connected to the production library Extreme Music, owned by Sony Music Publishing.
Inside, composers work in soundproof rooms packed with synthesizers and computer screens. On one visit, composers Kara Talve, Sami Goldberg and Anže Rozman were experimenting with unusual instruments including one mounted to a dinosaur skull while pitching music for an upcoming Harry Potter television series for HBO.
Their work represents the high end of the sync industry. But most sync music is created in home studios by independent composers who churn out tracks designed for library placement.
Songwriter and producer Dylan Callaghan, who turned to sync after years in indie rock bands, describes the sector as the hidden bulk of the music business.
“This isn’t a corner of the industry,” Callaghan says. “This is the music industry.”
For many musicians, sync offers something the streaming economy rarely provides: steady income.
Why the Music Industry Is Embracing Sync
Streaming may dominate music consumption, but it pays notoriously small royalties per play. That has pushed many artists to diversify their revenue streams.
Synchronization licensing offers an attractive alternative. A single placement can generate licensing fees, royalties from broadcast airings and additional income if the show is syndicated or streamed internationally.
For music supervisors like Ann Kline, whose credits include Shameless and Reacher, sync music also solves a financial problem.
Using a famous song by Fleetwood Mac, for example, can cost six figures. A similar-sounding track from a production library might cost a fraction of that — and can be tailored precisely to a scene’s emotional tone.
Ease of licensing is another key factor. Production music often comes with pre-cleared rights, allowing producers to secure tracks quickly without negotiating with multiple rights holders.
Industry research suggests that nearly half of the music used on television broadcasts in the United States now comes from production libraries, reflecting how dominant the format has become.
The Artists Behind the Anonymous Songs
Although sync music often feels anonymous, many respected musicians participate in the field.
The catalog of Extreme Music alone includes contributions from artists such as Quincy Jones, Snoop Dogg, Timbaland, Mark Mothersbaugh and Atticus Ross.
Some producers move between pop and sync seamlessly. T.J. Stafford and Mike Smith, founders of the production company Saint Rogue, have credits with major pop stars including Miley Cyrus, Britney Spears and Charli XCX yet they treat sync work as a reliable financial backbone.
“It’s like our 401(k),” Smith says.
The creative process can be remarkably fast. Composer Hendric Buenck, who wrote “Love’s a War,” often builds a full track within hours based on a brief describing the emotional needs of a scene.
Singer Ella Collier, who performed the track’s vocals, says she frequently writes multiple sync songs in a single day tailoring lyrics to leave space for dialogue in television scenes.
Far from being an artistic compromise, she argues, the work is central to contemporary music culture.
“It’s heard by millions of people,” Collier says. “What could be more mainstream than that?”
When Background Music Becomes Pop Culture
Library music has occasionally stepped into the spotlight. The theme for Curb Your Enthusiasm, Luciano Michelini’s “Frolic,” was originally composed for a production library and later rediscovered by Larry David after he heard it in a commercial.
Similarly, the director George Romero famously used library music in Night of the Living Dead decades before sync became a modern industry.
Today, the boundary between pop and sync is increasingly blurred. Viral sounds on TikTok can elevate obscure tracks into mainstream hits, while pop producers deliberately create songs designed for short-form video edits.
In some cases, it’s difficult to tell which came first: the viral moment or the music built to generate it.
The Next Disruption: Artificial Intelligence
As with many corners of the creative industries, artificial intelligence now looms over sync music.
AI tools can already generate passable background tracks in seconds. Platforms such as Suno allow users to create complete songs from text prompts, raising concerns among composers about market saturation and declining licensing fees.
At the same time, many television networks and major studios remain cautious about AI-generated music due to copyright issues and quality concerns.
For companies like Extreme Music, the strategy is to double down on human musicianship.
“We hire the best composers and charge for quality,” says Russell Emanuel, the company’s chief executive. “If you’re not dealing in premium music, you risk drowning in churn.”
The Sound of a Video-First World
The strange thing about sync music is that it is simultaneously everywhere and almost invisible.
Unlike chart-topping pop songs, most sync tracks are designed not to draw attention to themselves. Their purpose is to enhance the emotional texture of another experience, a scene in a show, a YouTube tutorial, a TikTok clip.
Yet collectively they may represent the most widely heard music of the digital era.
The next time a reality-TV elimination scene unfolds or a social-media video fades into the next clip, listen carefully. The music behind it may not have a chart position or a superstar performer.
But it is very likely part of the vast, hidden soundscape that now accompanies nearly every piece of video we watch.
And in the age of endless screens, that might make sync music the defining soundtrack of modern life.