Nesting gay men and posh female totty by the bucketload in the audience last night. Fill any programme with Baroque opera and that’s what you get. Why? Because the Baroque is aspirational pop. It's grounded in the same musical tricks that drive on the chart-topping hits of Kylie or Madonna: pumping ostinati, unshake-offable tunes and harmonic Häagen-Dazs - obvious harmonic loops that you can't get enough of. Though last night the hook was even simpler: a beddable boy.