You sure they aren’t lip sync’ing?
:-)
Heh, they go off-key a couple of places.
In the early years, Agnetha (the blonde from ABBA) was a notorious bad stage performer, painfully stiff and awkward to the point of being unintentionally comical. I don’t know if lip-synching helped or hurt her performances. She would try to choreograph her moves to the music and wound up missing other cues. Particularly her interactions with Frida when the two were supposed to move with each other in rhythm were classically stiff. But she was blonde and pretty so who cared?