At the turn of the 21st century, Wynton Marsalis was busy.

In 1999 alone, two years after winning the Pulitzer Prize for his oratorio “Blood on the Fields,” this jazz trumpeter and composer put out 10 different albums, one of them an eight-hour-plus live box set. His first symphonic composition, “All Rise,” was released in 2002, in a performance by the Los Angeles Philharmonic and Mr. Marsalis’s Jazz at Lincoln Center Orchestra.

But over the following decade, even casual fans would have noticed a slowdown. Mr. Marsalis was still active, premiering and refining works like the “Swing Symphony” and “The Jungle.” But the faltering record industry was no longer keeping pace with his pen. Sony put out compilations of existing pieces in 2012 and ’13, but no new music.

“It’s gotten thin, man — the higher levels of our thing,” Mr. Marsalis, 57, said in an interview at Jazz at Lincoln Center. “It’s not what I would have thought when I was 20, to be honest.”

The drought began to ease in 2015, with the founding of Blue Engine Records, an in-house label for Jazz at Lincoln Center. And this year is already overflowing, with Blue Engine’s potent release of Mr. Marsalis’s “Swing Symphony” (featuring David Robertson and the St. Louis Symphony Orchestra) as well as his score for the film “Bolden” and an album inspired by visual artists, “Jazz and Art.” (Blue Engine has ambitious plans to release 100 albums, by Mr. Marsalis and others, over the course of five years.)