Clifford Lee Burton was an American musician who was the bassist for thrash metal band Metallica from 1982 until his death in 1986. He performed on the band's first three albums, Kill 'Em All (1983), Ride the Lightning (1984), and Master of Puppets (1986). Burton also received a posthumous writing credit on ...And Justice for All (1988) for the song "To Live Is to Die".

Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. At the 2010 census, it was the fifth most populous unincorporated area in California. The population was 66,441 at the 2020 census.