Fans of BBC One's latest musical talent show, Over the Rainbow, are invited to have a go at singing at one of the programme's live events in Cardiff.
Organisers say it will give people the chance to take part in a musical theatre masterclass with help from BBC singers and musicians.
Jodie Prenger, winner of another TV talent show, I'd Do Anything in 2008, will be on hand along with some of the former aspiring Dorothys from the current TV show which is based on the musical The Wizard Of Oz.
Jodie says: "If you've been singing along on your sofa, this is your chance to have a go.
"Whether you're an enthusiastic amateur or an absolute beginner, we want to get you singing along. So go on - you've watched the Dorothys - now it's your turn to join in!"
The Over the Rainbow Live event lasts around two hours and culminates in a finale performance at St David's Hall, Cardiff, on Sunday 9 May. There are two sessions, 11am-1pm and 3-5pm.
For more information and to register for a place go to bbc.co.uk/dorothy or call 0370 901 1227.
Places are limited and will be allocated at random. The closing date for registering is 4pm on Monday, 19 April.