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Brandon Blackstock and Blake Shelton’s longtime friendship and working relationship came to an end after Kelly Clarkson’s divorce, marking a turning point in their history.

Brandon Blackstock’s career was built in the middle of country music’s inner circle, and one of his closest allies for years was Blake Shelton. Long before his name was tied to Kelly Clarkson, Brandon was following the family trade, stepping into his father, Narvel Blackstock, ‘s world of artist management at Starstruck Entertainment. The roster was stacked, but Shelton was the crown jewel, and their professional partnership was as tight as it gets until it wasn’t.

The two first crossed paths years before Clarkson even entered the picture, but their friendship really started to click in the early 2010s. At that point, Blackstock wasn’t just Shelton’s manager, he was also a trusted confidant. Shelton was one of the biggest names in country music, pulling double duty as a chart-topping artist and a fan-favorite coach on The Voice, and Brandon was right there behind the curtain, keeping the machine running. They traveled together, shared countless backstage hangs, and even spent personal time with each other’s families. Shelton, in particular, became more than just a client; he was a friend who didn’t hold back his opinions, especially when it came to Brandon’s love life.

In 2012, Shelton gave Blackstock a not-so-subtle shove toward the altar with Kelly Clarkson. Publicly, he went on record telling Hollyscoop, “Man, you need to grow up and figure out you need to marry this girl. I’ll do the music at the wedding or whatever you want to do… I’ll play for four hours if I have to.” It wasn’t just talk, either. Shelton was set to not only sing but also officiate the wedding. Clarkson herself told Entertainment Tonight before the ceremony, “[Blake’s] not only singing, he’s marrying us. He totally is, he’s done it before.”

Of course, plans changed when the couple decided to elope at Blackberry Farm in Tennessee after their wedding date leaked. Shelton later admitted on The Tonight Show with Jay Leno that the change suited him just fine, saying he “got to avoid having to go through a wedding,” adding with a grin, “I’d rather go to the dentist.” Still, Shelton and Blackstock’s friendship and professional relationship rolled on without missing a beat.

For years, Blackstock was in Shelton’s corner for major career moves. As Shelton’s manager, he helped guide the business side while Blake kept his boots firmly planted on the music and TV stage. But when Clarkson filed for divorce from Blackstock in 2020, everything shifted. The split was messy, public, and stretched out over two years, with custody battles, property disputes, and tabloid headlines dragging it along. And while Shelton stayed quiet publicly, reports in 2021 suggested he had made a personal decision to end his professional ties with Blackstock, choosing to step away from the business relationship entirely.

According to Us Weekly, the move was partly about keeping the peace. Shelton and Clarkson had grown extremely close as co-stars on The Voice, and sources said their friendship “goes beyond the business.” For Shelton, staying tight with Kelly meant putting distance between himself and her ex, especially given how contentious the divorce had become. In short, Shelton picked his side when it came down to loyalty, and it wasn’t the man who used to manage his career.

Brandon Blackstock’s death in August 2025 after a private three-year battle with cancer has put his life and relationships back under the spotlight. While the professional split between him and Shelton happened years before, their history is still a big chapter in both men’s stories. Shelton may have helped nudge Brandon into one of the most high-profile marriages in country-pop history, but when it fell apart, so did their partnership. In the end, their friendship didn’t survive the fallout, but the years they spent working side by side remain a reminder of how quickly personal and professional lines can blur and how hard they can be to untangle when things go south.