Which musician, Ian Ball or Dave Mustaine, is co-founder of the American metal band Megadeth?
Dave Mustaine David Scott Mustaine (born September 13, 1961) is an American musician, singer, songwriter, actor and author. He is best known as the co-founder, guitarist, lead singer, and primary songwriter of the American thrash metal band Megadeth, and the original lead guitarist of the American thrash metal band Metallica.
Robert Trujillo Roberto Agustin Trujillo (] ; born October 23, 1964) is an American musician and songwriter best known as the current bassist of the heavy metal band Metallica, a position he has held since 2003. He was also a member of crossover thrash metal band Suicidal Tendencies, funk metal supergroup Infectious Grooves, and heavy metal band Black Label Society, and has worked with Jerry Cantrell and Ozzy Osbourne.