The BBC's Oasis livestream has run into technical difficulties just hours before Liam and Noel Gallagher reunite on stage in Cardiff tonight. The iconic brothers will perform together again for the first time in 16 years as their nationwide tour kicks off this evening, with over 70,000 set to fill Cardiff's Principality Stadium. While the BBC team are covering the build-up in a livestream on iPlayer , the broadcast faced difficulties with its sound early on in the show. Hosted by Tina Daheley