Pop Shop: Hot 100, Demi Lovato, Gaga – Billboard

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.

Lady Gaga is more than a provocateur. She's the best live performer

Cool for the Summer - Wikipedia

Demi Lovato, Biography, Music & News

Demi Lovato, Biography, Music & News

Demi Lovato - Wikipedia

Let The Kids Dance: EDM And Top 40 Radio - Billboard.biz

Lady Gaga, Demi Lovato, and the State of the Pop-Star Documentary

Demi Lovato, Biography, Music & News

Sorry Not Sorry': Behind Demi Lovato's Unapologetic Anthem

Demi Lovato performs on stage at the Billboard Hot 100 Music