A Musical Massacre is the third studio album by American hip hop duo The Beatnuts. It was released in August 1999 via Loud Records. Recording sessions took place at Chung King Studios, Soho Music Studios and Planet Sound Studios in New York. Produced entirely by the Beatnuts, it features guest appearances from E-Swinga, Nogoodus, Biz Markie, Carl Thomas, Cheryl Pepsii Riley, Common, Cuban Link, dead prez, Greg Nice, Magic Juan, Marlon Manson, Patrick Blazy, Tony Touch, Triple Seis, Tyler Fernandez and Willie Stubz. The album peaked at number 35 on the Billboard 200 and number 10 on the Top R&B/Hip-Hop Albums in the United States. It contains two singles: "Watch Out Now", which peaked at number 84 on the US Billboard Hot 100, and "Se Acabo".