"War" (1971) met with only modest success, but later that year, the band released "All Day Music" which included the singles "All Day Music" and "Slippin' into Darkness". The latter single sold over one million copies, and was awarded a gold disc by the R.I.A.A. in June 1972. In 1972, they released "The World Is a Ghetto" which was even more successful. Its second single, "The Cisco Kid" shipped gold, and the album attained the number two spot on "Billboard" Hot 100 chart, and was "Billboard" magazine's Album of the Year as the best-selling album of 1973.