Busbee, a Grammy-nominated songwriter and producer best known for his work with the adventurous country singer Maren Morris, has died at age 43.

His death was confirmed Sept. 29 by his music publisher, Warner Chappell, which did not state a cause; Variety reported that a friend of the producer said he had been diagnosed over the summer with glioblastoma, an aggressive form of brain cancer.

Busbee was valued as a studio collaborator in Nashville, where he maintained creative relationships with Morris, Lady Antebellum, Keith Urban and Carly Pearce, among others. Yet his productions typically went beyond country’s standard sound to embrace aspects of pop and soul music.

On Urban’s “Ripcord” album, from 2016, he brought a slick disco groove to “The Fighter,” a duet with Carrie Underwood, and helped arrange unlikely cameos by Pitbull and Chic’s Nile Rodgers in “Sun Don’t Let Me Down.” Lady Antebellum’s “You Look Good,” which he co-wrote and produced, had taut horns and snappy funk drums.

His range was perhaps best captured on Morris’s 2016 major-label debut, “Hero,” which set the singer’s low, bluesy voice against sparkling synth lines and throbbing hip-hop beats.

“We didn’t want my record to lull people into a comfortable vibe they’d heard a million times,” Morris told the Los Angeles Times in 2017. “Busbee was never afraid to take it there and get weird.”

“Hero” was nominated for best country album at the Grammys, while Morris’s single “My Church,” which Busbee co-wrote, was nominated for best country song; the two rejoined for Morris’s follow-up record, this year’s equally eclectic “Girl.”

Notable deaths in 2019: Elijah Cummings, Cokie Roberts, Toni Morrison and others we have lost this year

Don Imus | Don Imus, who spent more than half a century in radio and television skating along the edge of propriety and occasionally falling into the abyss of the unacceptable, died Dec. 27 at a hospital in College Station, Tex. He was 79. In a roller-coaster career in which he grew chummy with prominent politicians, repeatedly got suspended or fired for offensive cracks, abused drugs and touted health foods, Mr. Imus won a loyal following, made millions and transformed himself from a bad-boy DJ into a host whose program became a nearly mandatory stop for presidential candidates. Read the obituary (Richard Drew/AP)

“I’m not a purist,” the producer said of his style. “Whatever the song needs is what it needs. And if it feels right? It is.”

Busbee was born Michael James Ryan in Walnut Creek, Calif., on June 18, 1976. He played classical piano as a child; later, he studied jazz trombone at New Jersey’s William Paterson University before returning home and working as a music pastor at a church.

He moved to Los Angeles in 2000 and got a job assisting Eric Valentine, an in-demand rock producer; Busbee went on to establish himself as a songwriter with tunes for the Backstreet Boys and Toni Braxton, as well as for a number of “American Idol” contestants.

His professional path in Nashville was cleared by the veteran producer and songwriter Dann Huff, who signed Busbee to an early publishing deal around 2007. One of his first country hits was “Summer Nights” by Rascal Flatts, which Huff produced.

Despite his success in country music’s capital, Busbee continued to live in Los Angeles, where he often worked in a cozy, gear-stuffed studio in Glassell Park. Survivors include his wife and their three daughters.

— Los Angeles Times