"Guardians of the Galaxy" broke a few superhero movie rules when it blasted onto the screen in 2014. In addition to being Marvel's first space opera, it became Marvel's first movie to have a soundtrack filled with pop and rock hits. Those songs, ranging from Redbone's "Come and Get Your Love" to the Jackson 5's "I Want You Back," set the tone for many of the film's iconic scenes.

RELATED: Guardians of the Galaxy Vol. 2: New Super Bowl Spot Released

We know that this May's sequel, "Guardians of the Galaxy Vol. 2," will also come with a soundtrack (one that writer/director James Gunn has called more "diverse"). But what songs are on it -- and what songs could, or should be on it? Here's what we know so far, and what we're hoping to hear.

15 FOX ON THE RUN (THE SWEET)

Guardians of the Galaxy Milano

We'll start this list with the three songs that we know almost for certain are going to be on the film's soundtrack, thanks to their inclusion in trailers and (in one case) a toy. We got our first taste of what might be on Peter Quill's new mixtape when the first full-length "Guardians" trailer debuted back in December. That trailer featured action-packed shots of the team set to the crunching glam guitars of The Sweet's 1975 song "Fox on the Run."

With it's synth-heavy opening, crunching guitar riff and banging drums, "Fox on the Run" is the perfect template for what a "Guardians of the Galaxy" song should be. You hear this song and you picture exactly what's depicted in the trailer: dive-bombing spaceships and heavy artillery flying everywhere. The Sweet's had a big run as superhero movie inspiration; their other big hit, "Ballroom Blitz," previously appeared in ads for "Suicide Squad."

14 THE CHAIN (FLEETWOOD MAC)

Guardians of the Galaxy 2

Another song that's probably a lock for the "Vol. 2" soundtrack is "The Chain" by Fleetwood Mac. This was actually the first song associated with the movie, as it was featured in the first "GOTG" footage screened at Comic Con International in San Diego last year. The song, an epic from Fleetwood Mac's groundbreaking 1977 album "Rumours," finally made its Marvel debut in the film's Super Bowl spot.

Considering that both Fleetwood Mac and the Guardians are mismatched quintets made up of passionate personalities, it's no wonder that "The Chain's" moody and frenetic closing fits so well with footage from the movie. There's also the fact that the oft-repeated phrase "chain, keep us together" evokes the ending of the first "Guardians" film, when the team forms a literal human chain to contain the energy of the Power Stone. The team formed a chain at the end of the first film, one that hasn't been broken since. Will the events of the sequel test the chain's strength?

13 COME A LITTLE BIT CLOSER (VARIOUS)

Baby Groot with a bomb in Guardians of the Galaxy 2.

This one's a bit of a deeper cut as it hasn't been featured in any trailers so far, but it is -- apparently -- featured in one of "Guardians of the Galaxy Vol. 2's" action figures. The interactive dancin' Baby Groot figure will play "Come A Little Bit Closer" -- although the toy's description doesn't reveal which version of the ditty it'll play.

There's a chance it'll play the original 1964 version by Jay and the Americans, although that version seems way less danceable and more acoustic. That's why it seems much more likely that if this song is on the soundtrack or in the film, it'll be the 1977 cover version by singers Johnny Duncan and Janie Fricke. For one thing, "Guardians of the Galaxy's" preferred music era is the '70s. Also, you can totally imagine Baby Groot getting down to this incredibly catchy and danceable chorus -- way more so than the original '60s version.

12 LIVIN' THING (ELECTRIC LIGHT ORCHESTRA)

Guardians of the Galaxy baby groot

WARNING: We're now venturing into speculation territory. The first three songs have either been used in trailers or toys, and now we're dipping our toes in new waters. First, though, comes a song that was actually included in the first "Guardians" film, but was cut from the movie and soundtrack. That song is Electric Light Orchestra's sweeping and optimistic pop song "Livin' Thing."

Gunn revealed back in March 2015 that a scene of Groot dancing to this song to Drax's disapproval was cut from the film. The scene was actually set up for the "I Want You Back" stinger, which featured Groot hiding his sweet moves from Drax. That scene was kept in, but "Livin' Thing" was cut. Could "Livin' Thing" -- or another ELO song, like "Mr. Blue Sky" or "Don't Bring Me Down" -- make its way into the sequel? We sure hope so, because ELO's the perfect band for the GOTG. After all, their album covers all featured spaceships!

11 EVERYDAY PEOPLE (SLY & THE FAMILY STONE)

Guardians of the Galaxy Gamora

Now, let's begin speculating! "Guardians of the Galaxy" loves soulful numbers, and it doesn't get much more soulful than Sly and the Family Stone. Including one of the group's many soul hits makes sense, and 1968's "Everyday People" would be a spot-on choice for the film. The song -- a hit that's been covered by "Guardians" soundtrack alum Joan Jett -- is a call for peace between different types of people, urging them to live and work together. If that doesn't sound like the motto of the Milano crew, then what does?

Plus, there's the added bonus that the lyric "there is a blue one who can't accept the green one" is so perfect for dueling sisters Nebula and Gamora -- two characters that are actually blue and green. We know for a fact that "Guardians of the Galaxy Vol. 2" will spend a good amount of time focusing on the relationship between Gamora and Nebula. If these two are gonna bond, maybe it'll be over this song.

10 TAKE A CHANCE ON ME (ABBA)

Guardians of the Galaxy Star Lord 2

Come on... are you kidding? Just listen to this track -- the ABBA song evokes a classic Star-Lord dance number right from its a capella beginning to its soaring conclusion. It fits in so well that you might actually think it was featured in the first film (we actually had to double check). Plus, if part of this film is about Star-Lord's unrequited feelings for Gamora, then a song titled "Take A Chance On Me" feels warranted.

Gunn has said this "Guardians" soundtrack will be more diverse, featuring songs everybody knows and ones no one knows. This one fits in with the former beautifully, as ABBA is one of the defining artists of the '70s. "Take A Chance On Me" is also a slightly deeper cut than other ABBA hits, making it seem a little more like a surprise. Their countless hits have inspired musicals and movies for generations, so it's not far-fetched to imagine an ABBA tune making its way to Peter Quill's spaceship stereo.

9 MONEY (THAT'S WHAT I WANT) (FLYING LIZARDS)

rocket raccoon groot

On the other end of the notoriety spectrum sits this insane-sounding cover of the Motown staple "Money (That's What I Want)." New wave group Flying Lizards covered it for their 1979 debut album and the song became a quasi-hit; at least in the UK, where it cracked the top 10. It became more notable in the US thanks to one-hit-wonder music video weekends on VH1 and MTV. This is an unquestionably weird tune, with aloof and dispassionate vocals stylishly clashing with artfully clumsy instrumentation. It's weird, but so are the Guardians of the Galaxy.

This song captures the off-kilter vibe of the team well, and it's also about, well, money. After all, this is a team that was brought together in a Nova Corps prison for their love of money and rewards. If there's a song Rocket could relate to, it's this one. Here's hoping it makes the final cut.

8 TRAVELING MAN (DOLLY PARTON)

It's worth remembering that these soundtracks exist within the "Guardians of the Galaxy" universe as mixtapes made for Star-Lord by his mother. She's the one that thought to pair the Runaways with Marvin Gaye the last go-round. If we're keeping Ms. Quill in mind as the unseen curator of the soundtrack, then something like Dolly Parton's 1973 song "Traveling Man" might resonate with her.

Like the woman in the song, Star-Lord's mom also fell for a traveling man -- except her man was a visitor from another planet and not just a door-to-door salesman. With Kurt Russell on board to play Peter Quill's father, we're potentially going to hear a lot more about Star-Lord's origin. Of course, this song's twist ending probably doesn't line up with Star-Lord's origin, but still -- you can't deny Dolly. The first "Guardians" soundtrack was a genre-hopping experience, so placing some good ol' country in-between disco and glam rock tracks will help diversify this soundtrack.

7 JAILBREAK (THIN LIZZY)

The Guardians walking in a ship

Like ABBA's "Take A Chance On Me," Thin Lizzy's 1976 single "Jailbreak" is a song that feels so "Guardians" it's hard to believe it wasn't already used in the first film. Remember, that film had an actual jailbreak scene in it! Maybe including a song called "Jailbreak" in that sequence would have been too on-the-nose? Still, this song's bruising riff and Phil Lynott's cocky, snarling delivery is tailor-made for a classic Guardians of the Galaxy action scene.

This is a swaggering song all about stealth, one that explodes into a soaring chorus; you can easily picture anything from a "here's the mission, team" debriefing scene to a full-blown galactic fracas being punctuated by this jam's riffage. Everyone knows Thin Lizzy's bigger hit "The Boys Are Back In Town," but this right here is the song destined for Guardians greatness. Just picture Drax diving into action, knives-first, to this little ditty.

6 VIRGINIA PLAIN (ROXY MUSIC)

If there's any '70s band that looks like a superhero group from outerspace, it's Roxy Music. From Brian Eno's extraterrestrial haircut and feather-lined jumpsuits to Bryan Ferry's suave suits and Paul Thompson's Tarzan-inspired get-ups, 1972-era Roxy Music is a group that would fit right in acting as "Guardians of the Galaxy's" cantina band.

That's why their very first single, "Virginia Plain," would fit in so well in the sequel. This is Roxy Music at their youngest and coolest, with Ferry's sly croon flirting with inhuman sounds and Eno's space-age computer whirrs punctuating a squealing riff. This song, particularly the climactic final minute, could score any spaceship shot in the flick similar to how, in the first film, Bowie's "Moonage Daydream" carried the Milano into Knowhere's orbit. With its cool and driving groove, you could also picture the team doing a slow motion strut to one of this oddly-structured song's verses.

5 NOTHING FROM NOTHING (BILLY PRESTON)

Drax and Mantis standing in Ego's core in Guardians of the Galaxy Vol. 2.

There's gotta be more on the "Vol. 2" soundtrack representing the Guardians' soulful side, and that's where Billy Preston's bouncing and ragtime-influenced "Nothing From Nothing" comes in. A number-one hit for Preston in 1974, "Nothing From Nothing" has gone on to be featured in a number of feature films and commercials over the last 40 years -- although Preston himself hasn't really become a household name, even if he's one of the many people to be considered the Fifth Beatle.

Like plenty of the songs on the first "Guardians" soundtrack, this is one that a lot of people have probably heard somewhere thanks to commercials and movies, even though they can't quite place it. This song's vibe is so positive and upbeat, the horns and piano so infectious, that you could really picture Baby Groot and the rest of the team -- possibly even Drax? -- getting down to this one in the wake of a major victory.

4 OH BONDAGE, UP YOURS! (X-RAY SPEX)

Guardians of the Galaxy Nebula

For "Guardians of the Galaxy Vol. 2," the team is adding two more women to its roster. Gamora will be joined by Mantis and Nebula, making this the first Marvel team to feature more than two women on it at once. As a nod to that, the soundtrack could include X-Ray Spex's feminist punk anthem and debut call to arms "Oh Bondage, Up Yours!"

The fast-paced song starts off with lead singer Poly Styrene stating "some people think little girls should be seen and not heard" before shifting gears and growling "but I think, 'Oh bondage, up yours!'" We've already seen footage of Gamora and Nebula being badasses, firing massive machine guns and piloting ships in dogfights. This anthem needs wider exposure, and pairing it with any of those scenes would work. Plus, if Nebula's gonna relate to any song, considering her new liberation from her father Thanos, it's this one.

3 KILLER QUEEN (QUEEN)

Guardians of the Galaxy Ayesha

For a movie set in space with a '70s soundtrack, Queen seems like the most obvious choice in the world for inclusion. The genre-bending glam band pretty much ruled rock and roll in the decade, and they also provided the soundtrack for 1980's "Flash Gordon." Queen is the definition of an obvious choice for inclusion on a "Guardians" song set -- but maybe the song "Killer Queen" isn't. After all, it's not one of the band's hardest rocking songs, and those are the ones that usually get snatched up for soundtracks.

"Suicide Squad" earned a lot of goodwill with its "Bohemian Rhapsody" trailer, so "Guardians" wouldn't go there. Instead, this single from 1974 -- Queen's first international hit -- might just do the trick. After all, the film's main antagonist might just be Ayesha, a solid gold alien of high-standing. Even if Ayesha isn't the film's villain, she sure does look like a killer queen.

2 PSYCHO KILLER (TALKING HEADS)

Guardians of the Galaxy Sovereign

The second "Guardians of the Galaxy" mixtape was, of course, made after Peter Quill's mother gave him the first tape. With that in mind, it would make sense to show a slight progression in the genres included on the second volume's soundtrack. The first film flirted with punk with the inclusion of "Cherry Bomb" by the Runaways. "Vol. 2" can dance even closer to the '80s with songs like "Money (That's What I Want)" and this song right here: "Psycho Killer."

This early Talking Heads song, included on their debut 1977 album "Talking Heads: 77," features one of rock's most nefarious (and recognizable) bass lines. If the film wants to set up any scene as ominous, then kicking up "Psycho Killer" in the background would do just that. David Byrne's paranoid and jittery vocal delivery also adds to the claustrophobia of the song. If things go south in the movie and characters start turning on each other (easy to picture with Yondu around), then this is the song for that.

1 DON'T STOP 'TIL YOU GET ENOUGH (MICHAEL JACKSON)

Guardians of the Galaxy Gamora

Just as "Guardians of the Galaxy" concluded with the Jackson 5's "I Want You Back," then the sequel could jump ahead in Michael Jackson's chronology to his first real solo hit. With his fifth solo album, 1979's "Off the Wall," Jackson took creative control of his career and kicked off one of the most successful musical streaks any artist has ever enjoyed. It all started with "Don't Stop 'Til You Get Enough."

Honestly, can you listen to this -- the dizzying strings, funk guitar and handclap-style percussion -- without dancing wherever you are? You can't. Your officemates are looking at you right now. That's why this song makes sense for the "Guardians" sequel. We know that Star-Lord wants to teach Gamora how to dance (first literally, then maybe metaphorically). That was a subtle point in the first film and the first look at "Vol. 2" featured an extended riff on dancing. This is the song that will make anyone -- even Gamora -- dance.

What songs do you want to hear in "Guardians of the Galaxy Vol. 2"?