The Real Group performed a beautifully layered vocal cover of "Blackbird", one of the most iconic songs by The Beatles.
Korean A cappella group MayTree performed an incredibly lyrical cover of the resurgent Kate Bush song "Running Up That Hill (Deal With God)".
MayTree performed a resounding cover of the theme from Back to the Future with sound effects and all.
MayTree performed a buoyant A Cappella cover of the iconic instrumental theme for the British children's television show Thomas & Friends.
MayTree performed a rather badass a cappella cover of the newly resurgent Metallica song "Master of Puppets".
Anne Reburn performed a harmonious cover of the Flight of the Conchords song "Friends", accompanying herself in different iterations.
MayTree performed a historical A cappella medley capturing the evolution of Microsoft Windows startup sounds throughout the years.
MayTree performed a jazzy a cappella cover of the "Pink Panther Theme" from the classic cartoon series of the same name.
Peter Hollens and Warp Zone performed a wonderful a cappella medley of the music from the "Star Wars "Prequel Trilogy while in costume.
Korean A cappella group MayTree performed a rousing cover of the iconic theme from the classic cat versus mouse cartoon "Tom and Jerry".