Judas Priest's "Victim of Changes."
Seminal stuff from the fathers of metal. Awesome changes throughout the song (5:09, "when she was wonderful, when she was fine, when she was beautiful, when she was mine"
Rob Halford's voice in its prime, and quite possible one of mosted gifted vocalists ever.
Check out the high notes he hits at 6:37 and 7:35.