Maybe it's in earlier posts...... I"m catching up.
Mr Montengro wrote for The Ambushers, Lady In Cement, Charro, the Undefeated, Viva Max - and of course The Man from U N C L E.
He was the conductor/arranger for Harry Belafonte.
(From Movie Classics CD - the music of Ennio Morricone and Hugo Montenegro)