"Madvillainy" is a collaborative album by the hip-hop duo Madvillain, consisting of rapper MF DOOM and producer Madlib. Released in 2004, the album is known for its unique blend of abstract lyrics and innovative production, featuring a mix of jazz, soul, and experimental sounds. The album has gained a cult following and is often praised for its intricate wordplay and unconventional song structures. Tracks like "All Caps" and "Accordion" showcase MF DOOM's distinctive flow and Madlib's eclectic sampling, making "Madvillainy" a landmark release in underground hip-hop.