The title quotation from Under Milk Wood encapsulates a widely held belief in the innate musicality of the Welsh and its religious roots. These roots were put down very largely during the nineteenth century, in a huge expansion of choral and congregational singing across Wales and particularly in the industrial communities. This development has been described as ‘a democratic popular choral culture rooted in the lives of ordinary people’, and central to it was the cymanfa ganu, the mass hymn-singing festival. Choral and congregational singing, typified by the cymanfa ganu, underpinned the perception of Wales by the Welsh and by many non-Welsh people as ‘the land of song’. Alongside this phenomenon ran the tradition of the plygain, a Welsh C...