Julio Rosario, Baritone Entered from booking ledger and New York Times concert listing and review. The complete program and correct order are uncertain. “Who Makes Music.” New York Times [New York, N.Y., United States], 5 May 1974, p. D16. Sherman, Robert. “Music in Review: Julio Rosario Sings In Varying Moods.” New York Times [New York, N.Y., United States], 12 May 1974, p. 48. GN. solo recital 1974-05-06T19:30:00