Track listing

1. "Jazzy" Colón - 4:06
2. "Willie Baby" Colón - 2:47
3. "Borinquen" Public Domain - 3:20
4. "Willie Whopper" Colón - 2:41
5. "El Malo" Colón - 4:01
6. "Skinny Papa" Colón - 4:05
7. "Chonqui" Brewster, Colón - 4:10
8. "Quimbombo" Brewster, Colón - 5:01

Personnel

• Dwight Brewster: piano
• Willie Colón: trombone, director, lead
• Yayo el Indio: vocals
• Irv Elkin: photography
• Irving Greenbaum: audio engineer
• Eddie Guagua: bass
• Lubi Jovanovic: liner notes
• Bob Katz
  Bob Katz
  Bob Katz is an audio mastering engineer who is known for his book on audio mastering. Katz has mastered three Grammy award-winning albums and one nominated album. He has received acclaim from audiophiles and his book on mastering has received acclaim, and some reviewers consider it the "definitive...
  
  : mastering
• Héctor Lavoe: vocals
• Nicky Marrero: timbales
• Jerry Masucci
  Jerry Masucci
  Jerry Masucci was a co-founder of Fania Records.-Early life:Masucci was born October 7, 1934, in Brooklyn, to parents Urbano and Elvira Masucci. He had a brother named Alex Masucci...
  
  : producer
• Johnny Pacheco: director, recording director
• Elliot Romero: vocals
• Pablo Rosario: bongos
• Joe Santiago : trombone
• James Taylor: bass