"duo recital" . "1970-04-15T20:30:00"^^ . . . . . "Entered from booking ledger and New York Times concert listing.\r\n\"Who Makes Music.\" New York Times (1923-), 12 Apr. 1970, p. 1. ProQuest. Web. 29 July 2025." . . . . . "Eduardo and Sérgio Abreu, Guitars" . .