'I approached writing for Elvis differently than I did for any other artist. The songs had to have acombination of blues, country, rock and pop [what came to becalled 'rockabilly']. It was like walking in his musical shoes. With each new Elvis movie, more of my songs were being recorded. It became more and more exciting, for I was becoming the only songwriter to have so many songs recorded by him. Among the musicians who played on my demos were Phil Spector, Hal Blaine, Leon Russell, Larry Kn...