Always read the fine print. At the base of the program for Pinchgut Opera’s production of Antonio Vivaldi’s Farnace (1727) it reads: ‘The edition of Farnace used in these performances is by Renzo Bez and Diego Fasolis, adapted with insertion arias selected by Erin Helyard.’ Translated this means that what the audience is watching is a version of the opera in which many of the arias are replaced by more popular ones from Vivaldi’s large number of other vocal works – Farnace plus Vivaldi’s greatest hits, as it were.