It's been said that Wales has produced more world class tenors per head of population than any other country on earth. But Wales is changing and the singing traditions are dying out. Only Men Aloud's Tim Rhys-Evans is a lifelong fan of the tenor voice and searches out two young potential talents of the future: Joshua Mills from Neath, who helps fund his studies at the Guildhall School in London by delivering pizzas, and James Murray from Swansea, who isn't sure if he's a natural tenor or not.

World-renowned tenors Gwynn Hughes Jones from Anglesey and Ryland Davies from Ebbw Vale explain how being Welsh has helped their careers, and Michael Chance tells the unusual story of castrati singers. Plus, a team of psychologists at Cardiff University turn baritone Tim into the tenor he has always wanted to be. Show less