This year’s Ars Electronica Festival in the Austrian town of Linz transformed the city into a giant art installation. “Huge speakers lined the banks of the Danube River as well as the streets and rooftops of Linz. Music — classical, folk, cyberpunk and sounds that simply defied classification — were piped in through some speakers. Others produced interesting sound effects intended to enhance or alter a listener’s experience of a place — a loop of placid brook babble playing at a crowded bus stop, for example.”