Who Do You Think You Are (UK): Season 12, Episode 5

12 - 5: Gareth Malone

Choirmaster Gareth Malone's passion for singing is in his blood - his parents met singing in musicals, and Gareth grew up surrounded by music. But he wants to know how far back his 'ta-dah' gene goes, and sets off to find out more.

His investigations into his mother's side of the family take him to London's West End, where he finds his great-great-grandfather, a star of musical comedy, performing for the king, George V. But it doesn't stop there - two more generations back and Gareth's journey takes him to the heyday of music hall and a theatre impresario in Dublin.