Glenn Frey, founding member and guitarist for the rock band the Eagles, as well as a solo star in his own right, died Monday at 67. According to TMZ, the cause was “a combination of complications from rheumatoid arthritis, acute ulcerative colitis, and pneumonia.” Frey co-wrote the Eagles hits “Hotel California” and “Desperado” with Don Henley, as well as finding solo success after the band’s 1980 breakup with “The Heat Is On” and “You Belong to the City.”