Impressive footage featuring a group of US dancers performing sky ballet at the launch of the 17th Shanghai International Art Festival.<br /><br />In the three-minute video, filmed on Friday morning, the dancers can be seen performing ballet along to the music on the glass windows of a skyscraper, high in the air.<br /><br />According to news reports, the dancers are from the Bandaloop dance troupe of the United States, which is famous for its sky dancing show. <br /><br />The team carried out a rehearsal on Thursday as the pre-show prior to the one-month festival from October 16 - November 16.
