Three big artists have rerecorded their most hallowed musical material. Taylor Swift, Roger Water and Demi Lovato each have different intentions in painstakingly putting their old songs onto new proverbial tape. On 1989 (Taylor’s Version), Taylor Swift seeks control of her master recordings. On Dark Side of the Moon Redux Roger Waters explores his most vaunted work from his youth now with from perspective of an octogenarian. And Demi Lovato Revamped pivots their old pop hits into a hard rock aesthetic. Switched On Pop listens back to all three albums to see how they hold up to the original and to uncover new musical discoveries.