NEW YORK — Milt Okun, a producer and arranger who helped turn acts as diverse as Peter, Paul and Mary, John Denver, and Plácido Domingo into pop sensations, and who founded Cherry Lane Music Publishing, one of the world’s largest independent music publishers, died Nov. 15 at his home in Beverly Hills, Calif. He was 92.

His death was confirmed by son-in-law Richard Sparks, with whom he wrote the memoir “Along the Cherry Lane: Tales From the Life of Music Industry Legend Milt Okun’’ (2011).

Trained as a classical pianist and raised around the music of folk singers like Woody Guthrie, Mr. Okun recorded his own versions of folk songs before he turned to developing the music of other artists.

He worked as a pianist, conductor, and arranger for Harry Belafonte in the 1950s, then coached Peter, Paul and Mary before they released their debut album in 1962. He helped form the folk group the Chad Mitchell Trio and discovered Denver when he replaced Chad Mitchell in 1965, after which the group became known as simply the Mitchell Trio.

Mr. Okun produced and arranged for Peter, Paul and Mary during the 1960s and for Denver for decades, producing hit songs like “Rocky Mountain High’’ and “Leaving on a Jet Plane’’ (which was a No. 1 hit for Peter, Paul and Mary).

In an interview with the website Artists House Music in 2011, Mr. Okun said his musical interests transcended pop. “Popular music, where I made my living, was work,’’ he said, “but my heart was in classical music and opera.’’

So Mr. Okun brought classical to pop. After doggedly pursuing Domingo for several years, Mr. Okun persuaded him to record the romantic pop album “Perhaps Love’’ with Denver. Released in 1981, it featured Domingo’s lustrous tenor in duet with Denver on a program of love songs. The album eventually went platinum and helped catapult Domingo to mainstream success.