 People who composed for him include Alberto Ginastera, Darius Milhaud, Xavier Montsalvatge, Heitor Villa-Lobos, Walter Piston, Ernst Krenek, Joaquín Rodrigo.Josef Tal's Concerto for Harp and Electronics was commissioned by Zabaleta in 1971, and premiered by him in Munich the same year.It is estimated that Zabaleta sold nearly three million records.