Rock

The best part of producing Mick Jagger’s vocals, according to Andrew Watt, is when he begins taking off his clothes.

“He starts in like, a sweater, a button-down and a T-shirt,” the producer-songwriter recalls of a studio session with the Rolling Stones legend, “and then, two takes in, the sweater comes off. Two takes later, the button-down comes off. All of a sudden, he’s down to a T-shirt, and he’s ripped, and he’s 80, and he’s f–king giving you full-blown Mick Jagger, shaking and sweating as he sings every note.”

Such fantastical rock-star run-ins have become relatively commonplace for Watt — but the 32-year-old and 2021 producer of the year Grammy winner, who wore a different Rolling Stones T-shirt every day to the studio while producing the band’s forthcoming album, Hackney Diamonds, still recounts the experience with giddy breathlessness. “You can’t not be jumping up and down with excitement,” he says of watching Jagger work his magic, “because that’s what we’ve all been trained to do for the last 60 years.”

Over the past half-decade, Watt has transitioned from scoring hits for pop stars like Justin Bieber, Camila Cabello and 5 Seconds of Summer to guiding late-career projects from rock’s legacy elites, including Ozzy Osbourne, Elton John and Iggy Pop. While the New York native still collaborates with modern A-listers — Watt worked on the majority of Austin, the recent full-length from frequent collaborator Post Malone — his career has become an inverse of the “How do you do, fellow kids?” meme, with the 1990s baby blending in with legends in their 70s and 80s. “It’s like going to college,” he says, “and learning from the literal masters.”

Helming Hackney Diamonds, due Oct. 20 on Geffen Records, represented a true bucket-list item for Watt, who was introduced to Jagger by veteran producer Don Was in the middle of the pandemic and struck up a friendship over FaceTime. In the summer of 2022, Watt was in London working with Dua Lipa, and Jagger invited him over for some tea; after years of false starts and scrapped demos for the Stones’ first album of original material since 2005’s A Bigger Bang, Jagger asked Watt if he would be interested in helping them cross the finish line. Watt’s jaw dropped: “You have this moment where you’re like, ‘Am I even capable of that?’ ” he says. “It’s the greatest honor as a kid with a guitar who grew up idolizing every single thing Keith Richards ever did.”

That level of lifelong fandom, combined with an urgency to secure results, is what Watt believes makes him so effective at sharing the studio with icons more than twice his age. He understands that “these legends don’t owe anyone anything,” as he puts it, “so the only reason they’re making a new album is for themselves.” With that in mind, Watt encourages artists to pursue ideas indiscriminately — less conversation, more raw creation — and then it’s his job to approach projects from the viewpoint of what fans most want to hear.

When it came to the Stones, “Any fan wants to hear the greatest live rock’n’roll band of all time,” Watt explains, “so to do anything else with them in the studio is just letting everyone down.” When preproduction for Hackney Diamonds began in September 2022, Watt pushed the band to work efficiently and made sure to prioritize its live energy, particularly within the interplay between Richards and Ronnie Wood.

Session locations ranged from Los Angeles to Paris; Steve Jordan took over the drum kit from Charlie Watts, who died in 2021 but is posthumously featured on two tracks carried over from earlier sessions; and Lady Gaga, Paul McCartney and Stevie Wonder were among the guest stars to swing by. The result is a lean, 11-song Stones album that Watt says was mostly finished in under six months, and that “you could put on against other contemporary music, but is still loose and really gets grooving at certain points.”

Although Watt likens the experience of producing a Stones album to climbing a personal Mount Everest, he also says that he has plenty left to accomplish in his career. Aside from contributing to Lipa’s highly anticipated third album, Watt recently co-produced “Seven,” Jung Kook’s Billboard Hot 100 chart-topper featuring Latto. “That was the first time I worked with an artist who didn’t speak the same language as me, so we communicated through music,” he says of the BTS star. “It was the complete opposite of my work with The Rolling Stones, but that’s what keeps it interesting.”

Watt says that his work with various music legends has already started to inform his new stars. “Watching Paul McCartney arrange background vocals and harmonize with himself?” he says. “I’m taking that s–t with me to every production I do for the rest of my life.”

This story will appear in the Oct. 7, 2023, issue of Billboard.