Sydney Theatre Company, Roslyn Packer Theatre, Walsh Bay. Ends today, 1.30pm and 7.30pm. Tickets: $84-$116. Bookings: (02) 9250 1777 or online. Duration: 1hr 35min, no interval. A Flea in Her Ear Here is a modern adaptation by Andrew Upton of Georges Feydeau’s 1907 play that replaces the scandal of mere adultery with something outrageous enough to serve in these more decadent times. Simon Phillips directs it with a feeling for the inexorable logic that underlies the absurdity of it all, and a splendidly choreographed cascade of stage business, full of doors, staircases, secret cupboards Long String Instrument American experimental musician Ellen Fullman and Theresa Wong come together for a Sydney Festival installation. Fullman is the creator of the Long String Instrument, playing the 25m-spanning instrument, producing sitar-like drones and ethereal notes. Sydney Town Hall, 483 George Street, Sydney. January 13, 8pm; January 14, 6pm. Tickets: $36$40. Bookings: 1300 856 876.