These Sisters Make Videos That Regularly Go Viral. When You Listen To Them Sing, You’ll Know Why. Subscribe to Reshareworthy! It's FREE and always will be! Sisters Lennon and Maisy Stella cover a song they love called “That’s What’s Up”. I could listen to these two sing all day! Enchanting! Subscribe to Reshareworthy! It's FREE and always will be! Related Posts When This 8-Year-Old Girl Got Up On Stage, Her Talent Blew Everyone Away Daughter Beatboxes With Her Dad In Awesome Showdown They’re Calling This The Epic Patty Cake Song. This Catchy, Original Tune Is Worth A Listen.