"Nobody's going to live up to Beyonce... I really am going to play on my strengths, which I believe for me is a combination of humour and sass and colour and incredible joy, and hopefully everybody will be singing along to all these songs because they will be quite familiar." Katy Perry won't be trying to top Beyonce's Super Bowl half-time performance when she hits the stage in Glendale, Arizona next month (01Feb15).