Music book, [1740x1918], of John Davies ('Siôn Dafydd y Crydd'), bookbinder, cobbler and musician, of Llanfihangel Ystrad, Cardiganshire, consisting mainly of notes on the theory of music and psalmody, largely transcribed from the works of William Tans'ur and others.
Also included is an epitaph to John Davies, apparently composed by David Davies, Castell Hywel (f. 86 verso), together with a related note, 1918, by John Jones, Aberaeron (f. 87).

'The construction of Harmony, or, the Syntax of Musical Sounds', written by David Harris, Carno, together with extracts made by him from printed works on music.

Tune book, [1833x1836], of Richard Edwards, probably Richard Owen Edwards, Penderlwyngoch, Gwnnws, Cardiganshire, containing hymn tunes by him and others, and notes in English and Welsh on the rudiments and instruction of music.