bass Bobby Valentin
congas Ray Barretto
engineer Irv Greenbaum
tracks b1, b3 flute, guest Jose A. Fajardo
flute, guiro, voice [charanga voice] Johnny Pacheco
piano Papo Lucca
producer Jerry Masucci
recording supervisor Johnny Pacheco
timbales Jimmy Delgado
trombone Leopoldo Pineda
trombone Reynaldo Jorge
trumpet Hector Zarzuela
trumpet Tony Barrero
tracks b2 violin, soloist Lewis Kahn
tracks a3 violin, soloist Ricardo Whittington
tracks a1 vocals Cali Aleman
tracks a2 vocals Celia Cruz
tracks a1, a3, b1 vocals Hector Lavoe
tracks a1, a4 vocals Ismael Miranda
tracks a1, b2 vocals Pete Rodriguez
voice [charanga voice] Rafael "Felo" Barrio
voice [charanga voice] Roberto Rodriguez