Rinaldo was the first Italian opera written for the London stage, and it catapulted the young Handel to fame and fortune with its brilliant display of arias, duets and innovative orchestral effects. Australian Emma Pearson is the astonishingly evil sorceress Armida, and London-based Australian soprano Alexandra Oomens shines as Almirena. American Randall Scotting brings his beautifully burnished countertenor tones to …