The dust may still be settling around Justin Timberlake's Super Bowl set, but now's as good a time as any to cast your vote for 2019's halftime performer.
What do you need to form a random doo-wop group with singing legend Billy Joel? Perhaps three other singers? Some talent? An arsenal of songs? Someone to convince Joel that he needs to be a in strange doo-wop group at this point in his career? Nope! Turns out, you just need a late night talk show and an iPad app.