(left – right) Marcus du Sautoy, Craig Revel Horwood, Josie Lawrence and Trevor Nelson at the Royal Opera House in London today, where it was announced they would be the new contestants of the BBC show Maestro at the Opera, a three part series in which precipitants will train to become an orchestral conductor. PRESS ASSOCIATION Photo. Picture date: Wednesday February 29, 2012. Photo credit should read: Stefan Rousseau/PA Wire