Kacey Musgraves is looking back at her dream blunt rotation.

As the Grammy winner marked the nine-year anniversary of her second album “Pageant Material,” she shared a series of throwback photos and memories on Instagram this week.

Among them: getting high with her hero, singer Willie Nelson, while opening for him on tour in 2014.

Musgraves recalled getting invited onto his bus for “coffee and smoke” before Nelson took the stage one night, “the first time” she ever lit up with him. The “hazy” chat to follow led to their first collaboration — a cover of Nelson’s “Are You Sure.”

The dulcet duet would be released by Musgraves as a hidden track on “Pageant Material.”

“We talked about all kinds of things,” she wrote on Instagram: “Our light-up western suits, conspiracy theories, aliens, his early job of cuttin’ trees down in East Texas, the history of hemp growth in the United States, and old songs.”

Their conversation eventually turned to his 1965 song about regret, in which Nelson solemnly croons: “Are you sure this is where you want to be?”

When Musgraves asked if he’s ever sung it live, he simply grabbed his guitar and directed those lyrics at her.

“I was officially on another planet at this point, hanging onto the fabric of time, barely able to cognize reality and form words but I managed to eek out a ‘yes,’” she recalled. “He started strumming. We started singing. And he said ‘I’ll record this one with ya if you want.’”

Musgraves, who started out with three self-released albums in the 2000s, added, “Next thing I know we’re in Austin and filming the video.”

Musgraves, whose photos showed the duo arm in arm and having shots of tequila, added: “It’s a good thing there is visual record of this moment in my life - otherwise I wouldn’t believe that it wasn’t just some hazy, sparkly, pipe dream that never actually happened.”