Elvis Presley once said, "Since I was two years old, all I knew was gospel music. It became such a part of my life, it was as natural as dancing. A way to escape my problems, and my way of release." It was Elvis' explosive mix of styles--blues, bluegrass, country, swing, pop--that generated his iconic world-changing rock n' roll, but it was the hymns, spirituals and church music of his childhood, the deep-seated gospel roots that sustained Elvis and his musical vision throughout his life.