Who is the Mexican-American bassist that plays for the band Big Sir?
Big Sir (band): Big Sir is a band that includes the bass guitarist Juan Alderete (The Mars Volta and Racer X) and the singer Lisa Papineau. Juan Alderete: Juan Alderete de la Peña (born September 5, 1963) is a Mexican-American musician, best known as the longtime bassist of Racer X and The Mars Volta.
Juan Alderete