Bruno Mars and Lady Gaga have been dominating pop radio independently for nearly 15 years, and last week they finally came together for their first collaboration: the bombastic pop/rock duet “Die With a Smile.”

In the new Billboard Pop Shop podcast, Katie and Keith talk about why they are such a strong pop duo. We also talk about F-1 billionPost Malone’s first country album and why it fits so seamlessly into the genre.

Also on the show we have chart news, like Taylor Swift meets Carole King in the chart history books, as The “Tortured Poets” section spends a 15th week at number 1 on the Billboard 200, as Chappell Roans The rise and fall of a Midwestern princess climbs to number 2 on the Billboard 200 for the first time and like Billie Eilish’s “Birds of a Feather” enters the top 5 of the Billboard Hot 100.

The Billboard Pop Shop Podcast is your one-stop shop for all things pop on the weekly Billboard charts. You can always count on lively discussion of the latest pop news, fun chart stats and stories, new music and guest interviews with music stars and people from the world of pop. Casual pop fans and chart junkies can hear Billboard’s Executive Digital Director West Coast, Katie Atkinson, and Billboard’s Managing Director of Charts and Data Operations, Keith Caulfield, each week on the podcast, which can be streamed on Billboard.com or downloaded in Apple Podcast or your preferred podcast provider. (Click here to listen to the previous edition the show on Billboard.com.)