Proving that everything new can be old again, pianist Scott Bradlee has become a viral pop sensation after creating a series of clips for YouTube that finds him and his ad hoc group Postmodern Jukebox reworking 21st century pop hits in a variety of vintage styles -- transforming Miley Cyrus' "We Can't Stop" into a '50s-style doo wop number, giving Macklemore's "Thrift Shop" a '20s jazz accent, crossing Daft Punk's "Get Lucky" with Irish folk music, and showing how Ke$ha's "Die Young" would work as a classic country tune.