Abraham Laboriel, Sr. (born July 17, 1947) is a Mexican bassist who has played on over 4,000 recordings and soundtracks. Guitar Player Magazine described him as "the most widely used session bassist of our time". Laboriel is the father of drummer Abe Laboriel Jr. and of producer, songwriter, and film composer Mateo Laboriel.Laboriel was born in Mexico City. Originally a classically trained guitarist, he switched to bass guitar while studying at the Berklee College of Music.