Creedence Clearwater Revival, commonly abbreviated as CCR or simply Creedence, was an American rock band formed in El Cerrito, California, in 1959. The band consisted of the lead vocalist, lead guitarist, and primary songwriter John Fogerty; his brother, the rhythm guitarist Tom Fogerty; the bassist Stu Cook; and the drummer Doug Clifford. These members had played together since 1959, first as the Blue Velvets and later as the Golliwogs, before settling on Creedence Clearwater Revival in 1967. The band's most prolific and successful period between 1969 and 1971 produced 14 consecutive top-10 singles and five consecutive top-10 albums in the United States, two of which—Green River (1969) and Cosmo's Factory (1970)—topped the Billboard 200 chart. The band performed at the 1969 Woodstock festival in upstate New York, and was the first major act signed to appear there.