French DJ duo Ofenbach will give a special performance during the opening ceremony of this year's UEFA Europa League final at the Stade de Lyon on 16 May.Dorian Lo and César de Rummel, who make up the French electro act Ofenbach, are the brains behind the hit singles Be Mine and Katchi, which between them have racked up hundreds of millions of stream views online. The duo, who released their latest single Party at the end of March, will be helping to build up the pre-match atmosphere at the final.They will be taking the stage in their home country, at