Jack is correct on all counts. Not just great playing here, but alos fine original writing by Rollins & scoring by Nelson. This might be the 60s Rollins album for me, all things considered, at least among "official" releases.
Note the phrase "original music from the score" as opposed to "original soundtrack recording".
One does have to wonder of all that was recorded for the soundtrack was just the themes & cues, or if some "blowing" was also recorded for possible use. Oh, fwiw, when I first saw the movie, it was on a local channels "late show". This was...late 70s iirc. The ending credits then had the Cher version of the Bacharach tune.