Determining which song was Elvis' biggest hit is a tricky thing, as he has enjoyed one of the longest and most successful runs in chart history.

On the birthday of Elvis Presley, let's take a look back at "Blue Suede Shoes" and "Blue Christmas" as well as his lesser known "blue" songs.

Stephen Shutts (a devoted fan who saw Elvis in concert four times) has spent decades in the Elvis memorabilia and autograph business. He’s collected and sold plenty of both. But when it came to autographs,

From the raw emotion of “Heartbreak Hotel” to the haunting melancholy of “Suspicious Minds,” Elvis Presley’s catalog spans over two decades and multiple genres, defining the sound of rock and roll. The King’s distinctive voice – with its blend of country twang,