20 years ago, Rod Stewart turned classic crooner with first Great American Songbook album

Saturday marks the 20th anniversary of the release of an unlikely hit album: It Had to Be You: The Great American Songbook by Rod Stewart.

The raspy-voiced rocker surprised everyone by recording an entire album of standards including "That Can't Take That Away From Me," "The Way You Look Tonight" and "The Nearness of You." Fans liked what they heard: The album reached number four on the Billboard album chart, becoming his first release to hit the top five since 1978.

In fact, the album was such a hit that it spawned no less than four Songbook sequels, all of which reached the top five. The third installment, 2004's Stardust, was Rod's first number one album since 1978's Blondes Have More Fun, and it even won him his first, and to date only, Grammy.