If you’ve ever watched a major UFC pay-per-view featuring "The Notorious" one, you know the vibe. The arena lights go pitch black. Thousands of Irish fans start a low, rumbling roar that sounds more like a war cry than a cheer. Then, those haunting, ethereal flutes kick in.
It’s bone-chilling. Honestly.
The Conor McGregor walk out song isn't just a track; it's a cultural collision. For a decade, McGregor has used a specific mashup that blends 100-year-old Irish rebellion with 90s Brooklyn hip-hop. It shouldn't work. On paper, it sounds like a mess. But when that transition hits? It’s arguably the most iconic entrance in combat sports history.
The Haunting Soul of The Foggy Dew
The first half of the walkout is always "The Foggy Dew." Specifically, the version by Sinéad O’Connor and The Chieftains from the 1995 album The Long Black Veil.
Sinéad’s voice is what makes it. It’s "go to war" music, as Conor himself once described it. The song isn't just a catchy folk tune; it’s a chronicle of the 1916 Easter Rising. It tells the story of Irish rebels fighting for independence in Dublin while others were off fighting for the British in World War I.
"Twas better to die 'neath an Irish sky than at Suvla or Sud el Bar."
Those lyrics carry a lot of weight. For McGregor, a guy who basically built his entire brand on being the vanguard of Irish MMA, choosing a song about self-determination and national pride was a masterstroke. It told the world he wasn't just a fighter; he was a representative of a nation.
Why Sinéad O’Connor?
McGregor has always had a deep reverence for Sinéad. He’s called her an "Irish hero." Their connection peaked at UFC 189 in 2015.
If you haven't seen that entrance, go find it on YouTube right now. Seriously. Sinéad stood on a literal pedestal in the middle of the MGM Grand Garden Arena, bathed in green light, singing it live. Conor looked like he was about to walk through a brick wall. It remains the gold standard for walkouts. Even after her passing in 2023, that performance is still cited by fans as the moment the "McGregor Era" truly felt unstoppable.
The Switch: Enter The Notorious B.I.G.
Just as the Irish ballad reaches its peak, the mood shifts violently. The flutes cut out. The heavy, rhythmic bass of "Hypnotize" by The Notorious B.I.G. takes over.
This is where the "Notorious" persona comes alive.
The transition is jarring in the best way possible. You go from the somber, historical weight of Ireland’s past to the flashy, cocky, multi-millionaire energy of the modern era. It bridges the gap between the scrappy kid from Crumlin and the global superstar who owns yachts and whiskey brands.
The "El Chapo" Exception
While the Foggy Dew / Hypnotize combo is his signature, he has deviated a couple of times. At UFC 196, when he moved up to fight Nate Diaz on short notice, he used "El Chapo" by The Game and Skrillex.
It fit the narrative of him being a "renegade" taking over the game. But fans noticed the difference. It didn't have that same "hair-standing-on-your-arms" effect. Since then, he’s largely stuck to the classic mashup because, frankly, you don't mess with perfection.
The Technical Reality of the Walkout
A lot of people ask why the song sounds different on TV replays or on the UFC Fight Pass app.
Copyright law is a pain.
Music licensing for live broadcasts is one thing, but "perpetual" rights for streaming are expensive. If you’re watching an old McGregor fight on a streaming service, you might hear a generic, royalty-free rock track instead of Sinéad and Biggie. It completely kills the mood. It’s like watching a movie where the climactic battle has no score.
Impact on the Crowd
There is a psychological element to this. When those first notes of the Conor McGregor walk out song play, it does something to the opponent.
Imagine standing in a cage, 10,000 miles from home, and hearing an entire arena sing a 100-year-old rebel song in unison. It’s psychological warfare. Chad Mendes once talked about how intense that atmosphere was at UFC 189. You aren't just fighting a man; you’re fighting an atmosphere.
Actionable Takeaways for Fans
If you’re looking to recreate that energy or just want to know the specifics of the tracks, here is what you need to know:
- Primary Track: "The Foggy Dew" by Sinéad O’Connor & The Chieftains.
- Secondary Track: "Hypnotize" by The Notorious B.I.G.
- Best Version to Listen To: Look for the "UFC 189 Live" version for the rawest experience.
- Historical Context: If you want to understand the lyrics of "The Foggy Dew," look up the 1916 Easter Rising. It adds a whole new layer of intensity to the walkout.
The walkout has become a blueprint for other fighters. Everyone wants "their" song now. But few have managed to pick a combination that so perfectly encapsulates their origin story and their current status quite like McGregor did.
Whether he’s winning or losing these days, that music still signals that a "big fight" feel has arrived. It’s the sound of an era that changed the sport forever.
To get the full effect, watch the walkout from the Eddie Alvarez fight at UFC 205. The Madison Square Garden acoustics made that specific transition from folk to hip-hop sound like a seismic event.