In a video that looks just like a segment of Disney’s Silly Symphonies or Fantasia, artist Simon Brethé animates the pentagram, making the notes of Ravel’s Bolero do feats ranging from charming a snake (the oboe) to serenading a girl at her window (the saxophone). At one point of the performance, one member of the string ensemble gets his bow tangled in the pentagram, a distraction that, subsequently, wreaks havoc in the entire orchestra.