Aled Jones delves into the diverse world of male voice choirs, from the valleys of South Wales to the yodelling table-songs of Georgia. He discovers the roots of the modern tradition in the gentlemen's clubs of 18th- and 19th-century Europe, and discusses the genre's future with conductor and composer Bo Holten. Featuring music from Die Singphoniker, the Rustavi Choir and Sweden's Orphei Dranger.
