Cornerstone

Cornerstone is the ninth studio album by the American rock band Styx, released in 1979. Styx's third straight multi-platinum selling album, Cornerstone was Styx's first album to earn a Grammy nomination, which was for Best Rock Performance by a Duo or Group. Like the four previous Styx albums, the band produced the album themselves. Styx recorded the album at Pumpkin Studios in Oak Lawn, Illinois.

Cornerstone is best known for including the group's only No. 1 Billboard Hot 100 Single, the power ballad "Babe". The album also includes the folk rock song "Boat on the River," which was a hit in Europe, though it failed to chart in the United States. "Why Me" was also a notable song, peaking at #26 on Billboard, #18 on Cashbox, #12 on Radio and Records, and #10 on Canada Top 100.

Cornerstone became Styx's first US Top 5 album, entering Billboard on October 13, 1979, and peaking at No. 2 in late November.