Does the Original Texas Chain Saw Massacre Lack Music?

Music is crucial to what modern horror is. If you a movie that is very light on sound track or has no sound track, that's notable. Does the original texas chain saw massacre lack music? Or does it mostly lack music? And yet it actually makes it feel more real. Id makes it feel like a documentary, because we aren't given this insight. Almost almost handholding, if you want t look at it ind like that kind of way.