Lo Mato (Si No Compra Este LP), in English: "I'll kill him.

(If you don't buy this LP)", is the eighth studio album of Willie Colón & Héctor Lavoe issued in 1973 by Fania Records.

[4][5][6] It was the fourth of Colón and Lavoe's records to go gold, after Cosa Nuestra (1970), La Gran Fuga (1971), and El Juicio (1972).

[2] The cover shows a variant of the National Lampoon, January 1973 cover If you don't buy this magazine, we'll kill this dog.

[7] The man being held up on the cover, while reversing the roles with Willie on the floor on the reverse, was José R. Padrón.