A book of hymn-tunes and psalm-tunes compiled by Thomas Jones, Newhavren at the age of twenty ('Thomas Jones pia fi/a dig a fydd os dygir fi'). It contains tunes by Isaac Williams, Aberaeron, William Jones and Richard Roberts, Llandrygarn, arrangements by David Hughes ['Cristiolus Môn'], Bodedeyrn, an 'Anthem Gron - Ple mae'r Iesu', and a large number of unsigned tunes.