A1 Inolvidable
Arranged By – Bobby Valentin
Vocals – Cheo Feliciano
Written-By – J. Gutierrez*
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A2 Lo Mismo Que A Usted
Arranged By – Papo Lucca
Congas – Roberto Roena
Drums [American Drums] – Ray Barretto
Piano – Ricardo Ray
Vocals – Chivirico*
Written-By – P. Ortega*
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A3 Tiemblas
Arranged By, Piano – Ricardo Ray
Congas – Roberto Roena
Drums [American Drums] – Ray Barretto
Vocals – Bobby Cruz
Written-By – C. Curet Alonso*
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A4 El Agua De Belen
Arranged By – Papo Lucca
Piano – Ricardo Ray
Vocals – Ismael Miranda
Written-By – E. Davidson*
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A5 Cara De Payaso
Arranged By – Papo Lucca
Vocals – Justo Betancourt
Written-By – H. Barbosa*, L. Reis*
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B1 Cuando, Cuando, Cuando
Arranged By – Louie Ramirez
Vocals – Hector Lavoe
Written-By – A. Testa*, T. Renis*
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B2 Fue En Santiago
Arranged By – Louie Ramirez
Vocals – Ismael Quintana
Written-By – B. Manrique*
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B3 Los Muchachos De Belen
Arranged By – Louie Ramirez
Soloist [Piano] – Larry Harlow
Vocals – Ruben Blades
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B4 Vuela La Paloma
Arranged By – Bobby Valentin
Soloist [Flute] – Johnny Pacheco
Vocals – Bobby Cruz, Cheo Feliciano, Hector Lavoe, Ismael Miranda, Justo Betancourt, Pete "Conde" Rodriguez*, Santos Colon*
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Artwork, Design – Ron Levine
Bass – Bobby Valentin
Bongos – Roberto Roena
Congas – Ray Barretto
Coro – Cheo Feliciano, Hector Lavoe, Ismael Miranda, Johnny Pacheco, Santos Colon*
Directed By [Recording Director], Leader – Johnny Pacheco
Engineer [Recording and Mixing] – Jon Fausty
Piano – Larry Harlow
Producer – Jerry Masucci, Larry Harlow, Louie Ramirez
Timbales – Nicky Marrero
Tres – Yomo Toro
Trombone – Barry Rogers, Lewis Kahn, Reinaldo Jorge*, Willie Colon*
Trumpet – Hector "Bomberito" Zarzuela*, Louis "Perico" Ortiz*, Ray Maldonado
