Jay-Z, Rita Ora and Emeli Sande perform at Yahoo! Wireless Festival in London The Source July 15, 2013 Photos Jay Z performed as the headlining act on the main stage on Day 2 of the Yahoo! Wireless Festival at Queen Elizabeth Olympic Park on July 13, 2013 in London, England. Emeli Sande and Rita Ora also performed. Check out some photos from the festival below!