Marvel's summer blockbuster, 'Guardians of the Galaxy' has opened to very positive reviews and impressive numbers at the box office. As we discovered last month, the movie's soundtrack is chock full of hits -- mostly from the early '70s -- by the likes of David Bowie, Norman Greenbaum, 10cc, the Runaways and the Raspberries.

But unlike many soundtracks, the songs on the cleverly titled 'Awesome Mix, Vol. 1' actually play a role in 'Guardians.' The film's hero, Peter Quill (Chris Pratt), has a very strong and touching connection to a cassette containing these tracks. Throughout his adventure, which involves working with an extremely odd group of mercenaries to retain control of a powerful weapon, he listens to that mixtape (on a vintage Walkman). At one point he even risks his life to protect it.

The soundtrack is currently No. 1 on both the Amazon and iTunes download charts. So with all these tunes being in the spotlight again, we thought we'd ask all of you the following question: "What's your favorite song on the 'Guardians of the Galaxy' soundtrack?" We've included all 12 cuts on 'Awesome Mix, Vol. 1' for your choosing. You can vote once an hour.