[TOMT] Some sort of movie or game that ended with the song "Let the Sunshine in" by Aquarius

Every time I hear this song (https://www.youtube.com/watch?v=06X5HYynP5E), specifically the second half of the song where the lyrics match the name, it makes me remember something. It was like, the end of a movie or show, game, etc. and it might have played into the credits. I remember it was like, a happy, maybe bittersweet ending? I feel like someone got shot and it might have been a western, but I also feel like I remember people driving/riding off into the sunset so I'm not entirely sure. Sorry for being so confusing, thanks for the help!

Edit: Definitely not The 40-Year-Old Virgin or Hair. Also, I feel like whatever it was came out more recently, as opposed to something like Hair.