I ask because the Brazilian TV Globo channel is using the same tune for its channel breaks. Anybody know what it is? It is the music played while the prospectors are climbing the hills of the Sierra Madre!
I haven’t tried to find the movie to listen to that track, but the musical score was by Max Steiner, a famous and marvellous composer of film music. Unless/until there’s evidence to the contrary, I have to believe that he wrote the original music. He might, of course, have borrowed from some old folk song or something similar, but I don’t think he did that much, director was John Huston, not John Ford.