You probably have heard by now that Adele was the latest singer to guest on James Corden's Late Late Show Carpool Karaoke series. In a new interview with VultureLate Late Show executive producer Ben Winston reveals how a late night show that's not even a year old booked the biggest singer in the world.

It turns out the seed was planted way back before 25 or the series was even a thing. "Adele was actually in L.A. when we were planning [Late Late Show] back in January and February of last year, and James and I saw her a little bit. We said to her, 'We’d love to do something with you on the new show.'" Adele and her management instantly agreed when Corden pitched the segment.

Adele's Carpool Karaoke session in its final form last 15 minutes, but according to Winston, there's a ton of unseen footage. "We had an hour penciled in for it. But she was having a great time, and James was having a great time. And in the end, we filmed for a couple of hours."

In case you're one of the two people who hasn't seen the latest and easily best episode yet, we've included it above. Since it premiered earlier this week, the Adele effect has been in full force, racking up over 22 million views and sending Kanye West's 2010 track "Monster" to the top 10 on the iTunes hip-hop chart thanks to some master rapping on Adele's part. You can read Ben Winston's full interview where he discusses how they film the segment and how they got Sir Elton John to be the next guest for their Super Bowl episode of Carpool Karaoke over on Vulture.