George Gershwin rose from Tin Pan Alley scrapper to Broadway royalty. From there, he conquered the concert hall and even the opera house, with his blend of popular song, jazz, blues, spirituals and European classical forms. Tune in for a selection of Gershwin songs, peformed by Al Jolson, Ella Logan, and Fred Astaire (pictured, with the composer and his brother, Ira); the world premiere recording of “An American in Paris,” with Gershwin himself on the celesta; and the Concerto in F, played on a memorial concert by Oscar Levant. It’s music of Gershwin, by George, this Sunday at 10 pm.