LET IT GO - IDINA MENZEL performed by SAPPHIRE at Open Mic UK singing competition Grand Final. LET IT GO - IDINA MENZEL performed by Sapphire at the Grand Final of Open Mic UK singing competition. Previous Open Mic UK Singing Competition winners include Birdy and Jahmene Douglas and auditions begin in August! For more information about the singing competition and to ENTER go to http://www.openmicuk.co.uk Also check out the TEENSTAR SINGING COMPETITION - AUDITIONS COMING SOON! TeenStar is one of the largest national singing competitions exclusively for teenagers and pre teens in the UK, and TeenStar auditions are coming soon! For more information and to ENTER go to http://www.teenstarcompetition.co.uk