Transcripts by William Griffiths, Pontardawe ['Ifander'], in 1850-1852, of Yr Arweinydd Cerddorol, in two parts, by Richard Mills ['Rhydderch Hael'], and a collection of a hundred and fifty hymn-tunes selected by William Griffiths ('Tonau Cynulleidfaol sef Casgliad o 150 o donau wedi eu dethol fel y goreuon o wahanol gasgliadau, Pontardawe, 1860').