It is one of the greatest family musicals of all time and now a lavish new production of The Sound of Music is set for a return to Cardiff’s New Theatre. Playing the iconic role of Maria, a role that has previously won her rave reviews is The Voice finalist Lucy O’Byrne. Lucy became a household name when she was the runner up of BBC One’s The Voice in 2015. With Will.i.am as her mentor Lucy became the first…