Session work Estrada has also done session work by playing bass for a diverse range of artists, including Ry Cooder on his eponymous debut studio album, Ivan Ulz, Leo Kottke, Van Dyke Parks and Howdy Moon. Grande Mothers In 2002, two years after his release from jail, Estrada joined forces with fellow former Mothers Don Preston and Napoleon Murphy Brock, along with guitarist Ken Rosser and drummer and percussionist Christopher Garcia, to form "The Grande Mothers", the only Mothers of Invention/Frank Zappa alumni consistently performing the music of Zappa since 2002, with over 90 performances. Since then they have performed at numerous concerts and festivals throughout the United States, Canada and Europe, including Austria, Belgium, Croatia, Czech Republic, Denmark, the UK, Germany, the Netherlands, Italy, Norway and Switzerland. In 2005, guitarist Miroslav Tadić replaced Ken Rosser in the line-up. Robbie "Seahag" Mangano has been the guitarist for all of the European Grande Mothers' tours since 2009. In 2003 Estrada was featured on the album Hamburger Midnight (taking its title from a George/Estrada co-composition on the first Little Feat studio album) on the record label Inkanish Records, on which he collaborated once again with Jimmy Carl Black. Sex offender status Estrada served six years in prison after he was convicted of committing lewd acts with a child in Orange County, California, in December 1994. In January 2012, he pleaded guilty to a charge of continuous sexual abuse of a female family member younger than 14 which happened in March 2008. In the plea bargain agreement, he was sentenced to 25 years in prison and is not eligible for parole. References External links 1943 births Living people Hispanic and Latino American musicians People from Santa Ana, California Singer-songwriters from California Criminals from California American rock singers Little Feat members The Mothers of Invention members The Magic Band members American people convicted of child sexual abuse American rock bass guitarists American male singer-songwriters Record producers from California American rock songwriters American session musicians American male actors American musicians of Mexican descent Mexican-guitarron players Guitarists from California American funk bass guitarists American male bass guitarists American jazz bass guitarists American rhythm and blues bass guitarists 20th-century American bass guitarists American male jazz musicians Jazz musicians from California