Santa Monica, CA Proper Dos is a Mexican-American hip hop group composed of Frank Villareal (rapper), Ernie Gonzalez (producer), "Big Bass" Brian (mastering), and Stuart Wylen (bass guitar, keyboards, congas). The group released an album, Mexican Power, in 1992 on Rhino Records. After this came We're at It Again in 1995, Heat in 1998, and Overdose in 1999. A street-style group; Proper Dos' main lyricist is Frank Villareal. However, Proper Dos has also had help on some recordings by special guests including Big Shady