Jason Abraham Curtis Newsted (born March 4, 1963 in Battle Creek, Michigan) is an American bassist best known as the former bassist of Metallica after Cliff Burton's death. As of 2010, with more than fourteen and a half years, he has the longest tenure as Metallica's bassist. After he left Metallica, he continued with his project Echobrain, played with Ozzy Osbourne and joined heavy metal band Voivod. Newsted uses the pseudonym Jasonic, which serves as both his alias in Voivod and the name of his music publishing company. He is also the founder of the Chophouse Records studio and label based in California.
