The best 'Carpool Karaoke' hits of 2017 so far

Who's ready for a car trip soundtrack?
Apple Music's Carpool Karaoke: The Series, based on James Corden's famous Late Late Show bit, hits the streaming service Aug. 8. Game of Thrones stars Maisie Williams and Sophia Turner, musicians Miley Cyrus and John Legend and many more familiar faces make an appearance in a trailer for the series released Monday.
But who has been the best at belting out the tunes? We've rounded up a few of the best carpool karaoke hits so far this year.
Harry Styles and James Corden, Sign of the Times
Styles seems pretty amused with himself as he and Corden sing the high notes before the song's chorus, but when they hit the bridge, they're both going all out, harmonizing and playing fake drums.
"I went somewhere else there," Corden said when the song ended.
Styles added that the song makes him cry, "in a cool way."
Katy Perry and James Corden, Firework
While Corden's knowledge of lyrics is usually pretty impressive, he seemed to slip a little on this one. It's cool, though, because Perry knows all the words.
Usher and James Corden, Yeah
The two dance while breaking it down, and at the end, Corden asks Usher for tips on his dance moves. He even parked the car so they could have a mid-carpool dance lesson.