"children's concert" . . . . "1942-02-21T11:00:00"^^ . . . . "New York Philharmonic Young People's Concert" . "Program: Program of North American Music\r\nAndré Mathieu was the winner of New York Philharmonic-Symphony Society's Young Composers Contest for 1941-42.\r\nWORLD PREMIERE of André Mathieu's CONCERTINO FOR PIANO AND ORCHESTRA, OP. 13, NO. 2" . . . . "symphony orchestra performance" . . . . .