Back in 2007, Diplo and Switch were ready to launch the music they’d been working on together; they just needed to figure out what to call themselves. They each chose a bunch of words at random, wrote them on pieces of paper and threw them in a hat. They pulled two out, first was “major” and the second was “lazer.”

With that, one of the most influential dance music projects of the late 00s and 2010s was christened.

Billboard News recently spoke with Diplo and Switch for a rare joint interview, with the duo discussing the origins of Major Lazer and the 15-year anniversary of the group’s debut album, Guns Don’t Kill People… Lazers Do.

The pair first met at Fabric London, realizing, Switch says, that “we both had a soft spot for Jamaican music at the time, and we were both doing our individual sounds, so it was a good excuse for us to come together and do stuff.”

Both producers had been working with M.I.A. on her albums Arular and Kala, with Diplo calling her “the catalyst for our music.” Shortly thereafter, the guys were making monthly trips to Jamaica to make music, falling into the local music community and having Jamaican artists including Vybz Cartel and TKTK record music that would ultimately end up on the Major Lazer debut.

They knew they were doing something right when they heard their track “Pon de Floor at a gas station in Kingston, realizing that their music was, Switch says, “penetrating this market that we felt was very special.” From Jamaica, they took the sound to the U.K., where the pair played one of their first big shows at London’s Notting Hill Carnival. Guns Don’t Kill People… Lazers Do was released on June 16, 2009, hitting No. 169 on the Billboard 200 the next month.

The catalog of the group — which included Diplo, Walshy Fire and Jillionaire after Switch’s departure and now features Walshy Fire and Diplo alongside Ape Drums — has since aggregated 4.8 billion streams, according to Luminate.

“With our videos and everything we did, [Major Lazer] would be cancelled [nowadays] before we even started,” says Diplo. “Because people wouldn’t have given us a chance. They would have been like ‘We don’t really understand this and this isn’t correct.’ But back then, nobody really gave a shit. They were like, ‘I like the way this sounds.’ Today there’s too many tastemakers and rules.”

The group continued having breakthrough moments, with Beyoncé sampling “Pon de Floor on her 2011 smash “Run the World (Girls)” and Major Lazer and DJ Snake’s “Lean On” becoming what was, at the time, Spotify’s most streamed song of all time.

“We had really invented something with the Major Lazer language,” Diplo continues, “but by the second project we were able to make records that were actually hits. It was awesome to see our trajectory, something so chaotic and then to build something that made sense for people.”

Watch the full interview above to hear the pair talk about why Switch left the group, why Diplo thinks “Get Free” is Major Lazer’s best song and what it’s like working with Beyoncé in the studio.