They were used at the University of Sussex to take part in an opera.
NewsWATCH: Robots sing opera duetBy The NewsroomPublished 16th Jun 2017, 12:52 BSTUpdated 19th Jun 2017, 12:41 BST The PavarobottisTwo Nao robots dubbed The Pavarobottis took centre stage in an operatic first.They were used at the University of Sussex to take part in an opera.