Thanks to Truecritic on my last blog post I found out there was a hit previous to Roy Hamilton for Unchained Melody. I was also wrong stating when Hamilton hit in 1957 with Unchained Melody.
According to http://www.royhamilton.net/Bio.htm "....“Walk”, released in 1954, which went to number one on the R&B chart and was a pop hit, “Unchained Melody”, another number one R&B hit as well as a top ten pop hit the following year (1955) , and the up-tempo hits “Don’t Let Go” in 1958 and “You Can Have Her”, in 1961, both top ten hits.
Best known for his massive 1955 hit single UNCHAINED MELODY Al Hibbler (1915-2001) was a distinctive singer with a dramatic and steady vibrato which he used to great effect on a series of popular singles and albums. Blind-from-birth Hibbler was initially influenced by Crosby and Russ Columbo prior to becoming a vocal disciple with the Duke Ellington Orchestra during the Forties; "
YouTube - AL HIBBLER - UNCHAINED MELODY