I suppose it’s fair to say that Philippe Jaroussky is a singer who divides opinion; you either love his light bright “soprano” sound or you prefer something more muscular (Sesto vs. Cesare perhaps). He has a cult following and he knows it. That side of things was very much on display at Koerner Hall last night when he appeared with the Ensemble Artaserse in a programme of arias from18th century Italian opera. It was clear that a goodly section of the audience had travelled from out of town for the concert and knew exactly what to expect. This was exemplified by the three encores leading up to Handel’s “Lascio ch’io pianga” which the hard core fans had been shouting for and weren’t going to go home without hearing!