Alex Warren had a very Aussie culture shock on stage in Sydney when fans sang Happy Birthday to his guitarist Ryan. Just as the candles blew out, the whole crowd belted “Hip Hip Hooray” — and Alex was completely baffled. He admitted it felt like everyone was in on a secret tradition that no one told him about. The moment had fans cracking up, and Alex’s reaction was just as good as the show itself at the sold-out Hordern Pavilion.