Simplify the following text for a Grade 10 native English-speaking person.
Original: Robert Trujillo ( ; born Roberto AgustÃ n Miguel Santiago Samuel Trujillo Veracruz on October 23 , 1964 ) is an American bassist who currently plays bass in Metallica .
Simplified: Roberto AgustÃ n Trujillo ( born October 23 , 1964 ) is an American musician who is most famous as the bass player for Metallica .