It's been billed as the First Twitter opera after a row broke out about a year ago between Estonian President Toomas Hendrik Ilves and the well known economist Paul Krugman.The row was about Estonia’s austerity policy. The opera it inspired, called "Nostra Culpa", Latin for Our Fault has just premiered in Latvia. Ģederts Ģelzis, went along to find out more about making economics operatic.