Marcelino Guerra, Roberto Torres – background vocals (on tracks 1 & 2) Félix "Pupi" Legarreta, Alfredo de la Fé, Eddie Drennon, Carl Ector, Patricia Dixon – violin (on tracks 3 & 4) Technical Fred Weinberg – engineer René López – producer Andy Kaufman – producer Joe Cayre – executive producer References 1977 albums Cachao albums Descarga albums Danzón albums