Play just the first few bars of songs like โ€œMy Heart Will Go Onโ€ by Celine Dion, โ€œDonโ€™t You (Forget About Me)โ€ by Simple Minds or even โ€œMad Worldโ€ covered by Gary Jules for any average moviegoer, and his or her response will be filled with nostalgia and vivid memories of the specific scene or trailer that used those songs. Just thinking about โ€œEye of the Tigerโ€ or โ€œStayinโ€™ Aliveโ€ directs my mind toward cinematic classics like Rocky III and Saturday Night Fever, and I was born in 1996.

These are perfect examples of iconic โ€œmovie songs,โ€ but as of late, it seems as if this phenomenon of songs โ€œdefiningโ€ a movie has been obliterated. Just the other day, I heard a certain song on the radio, but when I searched that artistโ€™s album on Spotify, the song was not there. I then proceeded to search the song title, and it directed me to none other than the Fifty Shades of Grey sound track. I became interested.

Are these star-studded โ€œmovie sound tracksโ€ simply a cross-promotional tactic used by artists to snag hit songs? What happened to those definitive โ€œmovie songsโ€? Does the general public know that their favorite tune was written for an unrealistic and naughty sex fetish film? Hereโ€™s a list of the nine best songs you probably didnโ€™t know were from movie sound tracks.

9. Ellie Goulding, โ€œLove Me Like You Doโ€
The ubiquitous radio hit was penned as the second single from the Fifty Shades of Grey sound track earlier this year, and since then has peaked at No. 3 on the Billboard Hot 100 and holds the UK record as the second most-streamed track in a single week. Itโ€™s also pretty safe to say that the song elevated Goulding into pop superstardom. โ€œLove Me Like You Doโ€ joins The Weekndโ€™s โ€œEarned Itโ€ as a song from the Fifty Shades sound track to chart in the Top 5, and both have helped the sound track sell more than one million copies thus far. Still havenโ€™t seen the movie.

8. Rihanna, โ€œShut Up and Driveโ€
โ€œShut Up and Driveโ€ gets lost within the plethora of Rihanna hits during the late 2000s, but many donโ€™t know that it was featured on the Wreck-It Ralph sound track in 2012. Although it didnโ€™t hit No. 1 on the charts like โ€œUmbrellaโ€ or โ€œDisturbia,โ€ the quirky and metaphor-ridden song is secretly one of my favoRihts.

7. Bruno Mars, โ€œIt Will Rainโ€
It seems like every single Bruno Mars releases becomes a hit, but โ€œIt Will Rainโ€ was sort of the first time we heard him go darker with his lyrics and production. Fitting, as the song was featured on the Twilight Saga: Breaking Dawn โ€“ Part 1 sound track in 2011.

6. Charli XCX, โ€œBoom Clapโ€
After being a mere featured vocal on Iggy Azaleaโ€™s massive hit โ€œFancy,โ€ โ€œBoom Clapโ€ was just what British pop singer Charli XCX needed to launch her right into the mainstream U.S. music scene. That infectious hook, those waves of synths during the verses, the exceptional use of onomatopoeia? โ€œBoom Clapโ€ was tailored for Charli XCX, and many also donโ€™t know that the song was featured on The Fault In Our Stars sound track in 2014.

https://youtube.com/watch?v=GIQn8pab8Vc

5. R. Kelly, โ€œI Believe I Can Flyโ€
The fact that โ€œI Believe I Can Flyโ€ was prominently featured on the 1996 Space Jam movie sound track, and the single’s cover is a serious-looking Kelly in the center with a close-up of Michael Jordanโ€™s face to his left and Bugs Bunny to his right, is probably why the song has lent itself to so much parody. I remember kids would constantly sing, โ€œI believe I can fly/ I got shot by the FBI/ All I wanted was a chicken wingโ€ in elementary school. However, the song was ranked No. 406 on Rolling Stoneโ€™s โ€œ500 Greatest Songs of All Timeโ€ list in 2004, peaked at No. 2 on the Billboard Hot 100, and became the R&B singerโ€™s biggest hit ever. Kelly was probably laughing all the way to the bank.

4. Destinyโ€™s Child, โ€œIndependent Women, Part 1โ€
Released as the first single from the 2000 sound track of Charlieโ€™s Angels, โ€œIndependent Women, Part 1โ€ by Destinyโ€™s Child was No. 1 on the Billboard Hot 100 for a whopping 11 weeks and was later named the 18th most successful song of the 2000s. I mean, who hasnโ€™t sat in the front seat of his or her car singing lead and had two friends in the back seat singing those iconic โ€œI bought itโ€ background vocals? Anyone?

3. Pharrell Williams, โ€œHappyโ€
Sometimes a song comes along that quite literally becomes bigger than life, and Pharrell Williamsโ€™s โ€œHappyโ€ is definitely one of those. With its carefree mood and perky rhythm, โ€œHappyโ€ is sure to get anyoneโ€™s head nodding or foot tapping, but it did way more than that. โ€œHappyโ€ went on to sell 14 million copies in 2014, making it one of the best-selling singles of all time and a monumental moment in pop culture. Oh, and the song was also featured in Despicable Me 2, but who cares about that?

2. Goo Goo Dolls, โ€œIrisโ€
The Goo Goo Dollsโ€™ timeless hit โ€œIrisโ€ was originally written for the sound track of 1998 movie City of Angels. However, it went on to become the most-played song of that year in all genres and one of the most-learned songs by 14-year-old boys who’d just bought an acoustic guitar to seduce their crush outside their bedroom window.

https://youtube.com/watch?v=ltg5dx4TpjU

1. Eminem, โ€œLose Yourselfโ€
If you havenโ€™t listened to Eminemโ€™s โ€œLose Yourselfโ€ before a workout, who do you think you are? The song is actually from his own film 8 Mile, which is about a young white kidโ€™s struggle to make it in the African-American-dominated rap music scene. It not only won the Academy Award for Best Original Song but also went on to be the defining song of Eminemโ€™s career. [Post-“The Real Slim Shady,” anyway โ€” ed.] Just remember those iconic lyrics: โ€œHis palms are sweatyโ€ฆsomething something..spaghettiโ€ฆ.something something…MOMโ€™S SPAGHETTI.โ€