Proper Dos is an American hip hop group formed in the early 1990s in California, composed of rapper Frank Villareal and producer Ernie Gonzalez. The duo released their debut album, Mexican Power, in 1992 through Skanless Records, which peaked at #32 on the Billboard Top Heatseekers. Their second album, We're at It Again, was released in 1995, followed by Heat in 1998 and Overdose in 1999. From Wikipedia →