In its classic sense, "classics", when used as a singular noun, means the study of the language, literature, history, art, and other aspects of ancient Greece and Rome. As a plural noun "classics" are books written in ancient Greece and Rome.
... keyboardist until his death in 1990. Without missing a show, Vince Welnick[?] joined as the keyboardist and stayed with the band until 1995. Bruce Hornsby[?] also played on ...