william thomas berry (born july 31, 1958) is an american former musician. he was the drummer for the alternative rock band r.e.m. from 1980 until he left the music industry in 1997. although known for his drumming, he also played many other instruments, including guitar, bass guitar and piano. he was also a songwriter for the band. he became a farmer after leaving the music industry. he made many reunions with r.e.m. after leaving.