A1 La Maldad
Written-By – Roberto Angleró
A2 Ataca
A3 Llueve
Written-By – Curet Alonso*
A4 Esa Que Yo Conoci
B1 Recordando A Miguelito Valdes
Written-By – Félix Castrillón
B2 Mujer Ingrata
Written-By – Henry Arana
B3 Quien Lo Diria
Written-By – Bobby Capó
B4 Que Bonito Es Puerto Rico
Written-By – Justy Barreto*
Distribuido por – TH Records & Tapes, Inc.
Mezclado en – Latin Sound Studios
Grabado en – Master Piece Recording Studios
Arranged By – Bobby Valentin, Jorge Millet, Miguel Flores (8), Ray Santos
Artwork – Drago Fernandez*
Backing Vocals – Carlos Santos (10), Elliot Romero, Yayo El Indio*
Baritone Saxophone – Chago Martinez
Bass – Carlos Roldan
Bongos – Mitchel Laboy
Congas – Jimmie Morales
Engineer – David Rodriguez (4), Jon Fausty
Guest – Eddie Feijo, Manolin Alers, Mervin Soto Mayor, Tommy Acevedo
Leader, Timbales, Producer – Willie Rosario
Photography By – Candido Ortiz
Piano – Javier Fernandez
Trumpet – Felix Rodriguez (3), Obed Tirado, Papo Cruz, Pedro Silva*
Vocals – Guillo Rivera, Junior Toledo