Three Dog Night is an American rock band. They formed in 1967 with a line-up consisting of vocalists Danny Hutton, Cory Wells, and Chuck Negron. This lineup was soon augmented by Jimmy Greenspoon (keyboards), Joe Schermie (bass), Michael Allsup (guitar), and Floyd Sneed (drums). The band registered 21 Billboard Top 40 hits (with three hitting number one) between 1969 and 1975. Because Three Dog Night recorded many songs written by outside songwriters, they helped introduce mainstream audiences to writers such as Paul Williams ("An Old Fashioned Love Song") and Hoyt Axton ("Joy to the World").