PSY listens to the 80,000 strong crowd during his set at the Summertime Ball 2013. This image appears in the gallery:PSY At The Summertime Ball 2013 - Pictures 11. PSY listens to the 80,000 strong crowd during his set at the Summertime Ball 2013. Picture: PA 13 images See the full gallery: PSY At The Summertime Ball 2013 - Pictures