Here are some videos of Piyo (shared privately so don’t know if it needs registration/login)
http://www.youtube.com/watch_private?v=jdO3Wa_qXIw&sharing_token=25RPypP06HGtMoxQmQrfWA
http://www.youtube.com/watch_private?v=9dALMFYfuKc&sharing_token=Oft63gCBTCKTq6T5oJypEw
Hope you enjoy