This week's special guest is 15-year-old Vine star Shawn Mendes, who announced his mainstream arrival when his debut single "Life of the Party" rocketed to No. 24 on the Hot 100 chart in its first week. Jason and Keith also talked about Trey Songz's No. 1 album debut; Sia's "1000 Forms of Fear"; Hot 100 moves by Ariana Grande, 5 Seconds of Summer, Charli XCX and Maroon 5; and an awesome chart stat of the week about the Rolling Stones. For information regarding your data privacy, visit acast.com/privacy

On this week's episode, Jason and Keith discuss Robin Thicke's confusing new album "Paula," Ed Sheeran's No. 1 debut and Sam Smith's "In The Lonely Hour" holding at No. 2, impressive chart starts for G-Eazy and Shawn Mendes, and a pop news roundup with Charli XCX, Ariana Grande, Jessie J and Nicki Minaj. For information regarding your data privacy, visit acast.com/privacy

On this week's episode, Jason and Keith discuss the No. 1 debut of Lana Del Rey's "Ultraviolence," and what her lack of high-profile promotion means for pop; Ed Sheeran's projected sales debut for "x" and his ascendance to pop stardom; Maroon 5's Top 20 debut on the Hot 100 chart; and World Cup songs from Shakira, Pitbull and Santana. For information regarding your data privacy, visit acast.com/privacy

Jason and Keith discuss Jack White's No. 1 debut and record-setting vinyl sales; Iggy Azalea's "Fancy" run at No. 1, and if there's a song coming that could knock it out of the top spot; the projected sales successes of Lana Del Rey's "Ultraviolence" and Sam Smith's "In The Lonely Hour"; and what exactly went wrong with Jennifer Lopez's "A.K.A." album. Plus, the podcast welcomes special guests The Vamps, who talk about working with Demi Lovato on "Somebody To You," their screaming fans and how they plan to roll out an album in the United States. For information regarding your data privacy, visit acast.com/privacy

On this special episode, Jason flies solo and hosts live from Bonnaroo 2014 alongside Billboard.com editorial assistant Chris Payne, Billboard social/streaming charts manager William Gruger and their folk-loving pal Patrick to discuss the festival live from Manchester, Tennessee. The guys talk about Kanye West's polarizing headlining set, Lionel Richie's triumphant performance, the epic Skrillex Superjam, the presence of folk and country music at the festival, the best non-music activities at 'Roo and what makes Bonnaroo unique from every other U.S. festival. For information regarding your data privacy, visit acast.com/privacy

On this week's special episode, Jason and Keith host another "Ask The Pop Shop" session of answering listener questions about the chart world and pop music. How exactly is the Hot 100 put together? Will Demi Lovato's new single "Really Don't Care" become a hit? Is Katy Perry's "Birthday" underperforming? What's the best source for global sales stats? Should Lady Gaga release another single off of "ARTPOP"? What's the most surprising hit single of this year? Keith and Jason answer all these listener-submitted Twitter questions and more. For information regarding your data privacy, visit acast.com/privacy