22. Britney Spears
Yes, Britney looked nervous. Yes, she oddly mouthed the words to much of the music. But the few moments of playfulness she did give us were so good, it had us screaming "Gimme more." Should she really be this high on the ranking? Maybe not. But come on, it's Britney, bitch.
21. Michael Bublé
We can never get tired of hearing Michael Bublé belt out his hit songs but his Carpool Karaoke segment was especially meaningful because the 44-year-old performer opened up about the devastating cancer diagnosis of his young son, Noah and encouraged viewers to donate to Stand Up To Cancer.
20. Shawn Mendes
Swoon. There's talk about underwear, Harry Potter, singing and just general merriment.
19. Jonas Brothers
The Jonas Brothers helped the talk show host get to work and sung their hit song, "Sucker," as well as a few throwbacks from the early days of the band. The brothers also took a lie detector test about their comeback and why they broke up in 2013.
18. Céline Dion
Viva Las Vegas! Céline Dion took a ride with Corden down the Las Vegas strip. She belted out many of her classics but don't miss her dramatic but hilarious rendition of "Baby Shark." The pair finished off their Carpool Karaoke segment singing her Titanic anthem, "My Heart Will Go On" at the Bellagio fountain.
17. Elton John
Elton John's saucy personality, his decades of hits, and his penchant for ridiculous costumes make the perfect recipe for a delightful Carpool Karaoke.
16. Madonna
The Queen of Pop did not disappoint during her time riding shotgun with James. She vogued, she twerked, she freaking sang the Evita classic "Don't Cry for Me, Argentina" a capella! The only thing keeping Madonna from ranking any higher was the relatively dull chatter during the breaks between belting out her hits. We did enjoy her cheeky tease about an eyebrow-raising night out with Michael Jackson, though.
15. Barbra Streisand
Things got wild when Barbra Streisand took the driver seat during Carpool Karaoke. The legend admitted that she recently failed her driving test three times. She also discussed forcing Apple to get Siri to pronounce her name correctly and taking a 27-year hiatus from performing. Plus, they sang a rendition of "Don't Rain on My Parade."
14. Sia
She may have kept the wig on the entire time, but Sia wasn't holding back during her trip with James. Of course, she belted her face off on hits "Chandelier" and "Alive," but she also gave us a rare glimpse into the person behind the wig with her surprising views on aliens and an even more surprising demonstration of her ability to balance a dozen eggs on her hands. Yes, really.
13. Ariana Grande
Ariana Grande's Celine Dion impression is the gift that keeps on giving. That, coupled with James Corden carrying her into a Starbucks, their duet to "Suddenly Seymour" and her amazing pipes in general make this an excellent Carpool outing.
12. Mariah Carey
Make no mistake: Queen Mariah was instrumental in Carpool Karaoke becoming the phenomenon it is today. Without her, the segment might have never even gotten off the ground. She was unbelievably game to banter with James and belt out our fave ("Always Be My Baby"), but at just over five minutes, the inaugural clip can't help but pale in comparison to those that have come after it. If anyone is deserving of a round two now that Carpool Karaoke is an institution, it's the woman who helped kick things off.
11. Chance the Rapper
Chance the Rapper joined Corden for Carpool Karaoke to sing a few of his biggest hits and chat about his friendships with former President Barack Obama, Jay Z and Kanye West. The 26-year-old performer also did a vegetable taste test to see if he could find any that he liked.
10. Stevie Wonder
All you need to see is the moment tears well up in James' eyes as Stevie serenades his wife over the phone to know how special a segment this was to the host. That we were able to go along for the ride was just icing on the cake.
9. Kelly Clarkson
Kelly Clarkson's personality is infectious. It also helps that she can SING. Everything is on full display during her trip in the car.
8. Harry Styles
As if Styles still needed to prove his worth as a solo artist after an incredible debut album and a week of residency on The Late Late Show, his Carpool Karaoke did it. He's charming, funny, willing to play the Julia Roberts role in Notting Hill, able to pull off even the most nippley of shirts, and truly kills in an "Endless Love" duet that we will never forget. We're emotional...but in a cool way.
7. Cardi B
From a driving lesson at CBS Studios to hijacking a dance class at a senior center, it wasn't any Carpool Karaoke segment when Cardi B joined Corden for a ride around Los Angeles. The pair also discussed the performer's love of cars and the age ranges at her shows.
6. Justin Bieber
Say what you will about Justin, he's the only person on this list who's been asked to come back and film a second segment. The kid's got hits aplenty and has a charming rapport with James. While we might grow weary if this somehow turns into a trilogy, Bieber's pair of segments are classic Carpool Karaoke.
5. Jennifer Lopez
The Leonardo DiCpario text seen 'round the world easily elevated J.Lo's trip in James' car to Top 10 status. But it was her engaging personality and unexpected vocal chops that made her Top Five.
4. Jennifer Hudson
There are few moments on Carpool Karaoke that have been funnier than Jennifer Hudson singing James' drive-thru order to one lucky fast food employee. J.Hud looked like she was having a blast during her drive—and that voice, come on! One of the all-time CK greats.
3. Lady Gaga
In case anyone had forgotten that Lady Gaga is one of the greatest vocalists in the game, along came her Carpool Karaoke segment. Seriously, the sheer vocal intensity delivered while merely sitting in a car is astounding. As if that wasn't enough (even though it really, really was), she also made CK history by being the first person to drive James around for a bit (and make him incredibly nervous in the process). Plus, she was funny as hell. Mother Monster did good.
2. Paul McCartney
Where to begin? Did you ever think you'd cry watching a Carpool Karaoke? Paul McCartney's extended outing with James Corden took this segment to a whole other level.
1. Adele
Did you expect anyone else? Between her hilarious stories, her jaw-dropping voice, and her badass performance of Nicki Minaj's verse in "Monster," Adele's Carpool Karaoke segment is undeniably the gold standard. Long may she reign.