What is/are your favorite soundtrack/s?

This has to be one of my favorite movies and the soundtrack is incredible.  The soundtrack spans many genres of rock and roll, surf pop, pop, soul, country, and lot of music comes from the 60's and 70's.  The soundtrack has an overall fun vibe to it imho.  The movie, made in 1994, is one of Tarantino's best.  If there is some universe where you've not seen this movie yet, my god please do yourself a favor and go watch it.  It is iconic, hilarious, dark, sexy, witty, hip, moving and about a thousand and one other adjectives.   

Funny enough, I think this is the first soundtrack that I've purchased.  I really enjoy them because you get a lot of different music from different artists, spanning wide genres and playing back to back, but it's not haphazard.  The music is carefully chosen by the music supervisor and the director and a lot of energy and thought goes into it.  Other soundtracks I would love to own: Interstellar, Arrival, Guardians of the Galaxy, Reservoir Dogs, Drive, Baby Driver and I'm sure plenty others. 

I think the obvious reason we buy soundtracks is because they connect us back to a movie, or characters we love at a time of our life when we first saw the movie.  But I'd like to hear your stories and thoughts on this as well. Thank you for reading.

Happy 4th of July! What is your favorite Soundtrack?