Yes, Roy, "Four Walls", recorded in February, 1957 was officially the beginning of Jim's newer and much smoother style sung in a lower key. In January, 1956, Jim recorded what was pretty much his last "cowboy" song sung in a higher register with the song "Oaklahoma Hills" which was included on his first RCA LP "Singing Down The Lane", but he did do some songs later in 1956 including "My Lips Are Sealed",Am I Losing You", "Look Behind You", and "Don't Ask Me Why" that are similar to his later recordings. His third album simply titled "Jim Reeves" was the first LP to introduce the "new" Jim with songs like "Teardrops In My Heart", "Need Me" and "You Belong To Me"...