Jim Matheos is an American guitarist and songwriter, best known as a founding member of the progressive metal band Fates Warning. Born on July 30, 1963, in Evanston, Illinois, he has been influential in the development of the progressive metal genre since the band's formation in 1982. Matheos is recognized for his intricate guitar work and songwriting skills, contributing to the band's distinctive sound. In addition to his work with Fates Warning, Matheos has collaborated with various artists and projects, including the band OSI. He has released several albums and is respected for his innovative approach to music, blending elements of metal, rock, and progressive styles.