The format originates with folk singer Woody Guthrie's Dust Bowl Ballads (1940) and was subsequently popularized by traditional pop singer Frank Sinatra's 1940s–50s string of albums, although the term is more often associated with rock music. In the 1960s several well-regarded concept albums were released by various rock bands, which eventually led to the invention of progressive rock and rock opera.
The format originates with folk singer Woody Guthrie's Dust Bowl Ballads (1940) and was subsequently popularized by traditional pop singer Frank Sinatra's 1940s–50s string of albums, although the term is more often associated with rock music In the 1960s several well-regarded concept albums were released by various rock bands, which eventually led to the invention of progressive rock and rock opera.