When you think of Westerns, and the truly great scores and soundtracks that propelled them into legendary status, there are a staggering number of all-time greats. Much of that credit is thanks to a wide range of composers who have tried their hand in this sacred genre: Elmer Bernstein, Dimitri Tiomkin, and Alfred Newman for starters. Then there are contemporaries like Bruce Broughton, Alan Silvestri, John Barry, Michael Kamen, James Newton Howard, Harry Gregson-Williams and James Horner as well as those just dipping their toe in for a particular film David Newman and Michael Abels. Part of that great pantheon is John Debney who has been around the corral a…