He [the shogun, being mistaken for the emperor in the Dutch chronicle] order'd us to take off our Cappa, or Cloak, being our Garment of Cerimony, then to stand upright, that he might have a full view of us; again to walk, to stand still, to compliment each other, to dance, to jump, to play the drunkard, to speak broken Japanese, to read Dutch, to paint, to sing, to put our cloaks on and off ... I join'd to my dance a lovesong in High German. In this manner, and with innumerable such other apish tricks, we must suffer ourselves to contribute to the Emperor's and Court's diversion.
For those who care, this came from "Modern East Asia: A Brief Histroy" by Schirokauer and Clark, but they got it from "The Japanese Discovery of Europe" by Keene.