FILE -- In a Tuesday, Oct. 11, 2016 file photo, jazz musician Jim Cullum plays his horn as he joins four other local individuals who are honored at the 2016 Distinction in the Arts award ceremony at the Carlos Alvarez Theater in San Antonio. Cullum, long known for his "Riverwalk Jazz" show that aired on public radio stations around the country, died at his home Sunday. He was 77. (Kin Man Hui/San Antonio Express-News via AP, File)

SAN ANTONIO | Jim Cullum, whose San Antonio-based band used public radio to bring his classic jazz to the world, has died. He was 77.

His booking agent, Steve Frumkin, tells The Associated Press Cullum died Sunday at Cullum’s San Antonio home of an apparent heart attack.

Cullum, a cornetist who led the Jim Cullum Jazz Band, performed for decades at his San Antonio River Walk nightclub called The Landing. His public radio program — first called “Riverwalk: Live From the Landing,” then “Riverwalk Jazz” — started in 1989 and ran for over 20 years, eventually being syndicated nationwide and around the world.

Barry Brake of the Jazz Protagonists tells the San Antonio Express-News , “Jim and the band brought so many people to jazz, even people who might never have listened to it.”