A manuscript copy of a song for four voices, with piano accompaniment, entitled 'Gadael Tir' [the music being by W. O. Jones, and the words by Humphrey Jones]. The song was composed for competition at an eisteddfod (Eisteddfod Talaeth Gwynedd), held at Blaenau Ffestiniog, Whit Monday, 1922.

Two songs: (1) 'Y Rhosyn', words by W. J. Parry and music by W. Davies (2) 'Myfyrdod yr Unig', Welsh words by W. J. Parry, English translation by T. Watkins, Bethesda, and music by D. Parry, Bethesda.

Two holograph songs ('Mwy o flodau', 1930, and 'Gyda'r bore bach', 1934), by Mansel Thomas.

Cerddoriaeth sol-ffa a hen nodiant yn bennaf gan, neu a drefnwyd gan, ac yn llaw, y Parchedig W. E. Penllyn Jones, gan gynnwys unawdau, deuawdau, cytganau, emyn-donau ac emynau = Music, both sol-ffa and old notation, chiefly by, or arranged by, and in the hand of, the Reverend W. E. Penllyn Jones, and which includes solos, duets, choruses, hymn-tunes and hymns.
Ceir emyn-donau hefyd gan R[owland] H[uw] Pritchard (f. 43), James Leach (f. 82), Chester G. Allen (f. 104) ac eraill; emyn gan y Parchedig D[avid] Tecwyn Evans (f. 48); a chopi o gytgan, ynghyd â nodyn byr, yn llaw 'L. D. J.' sef Lewis Davies Jones ('Llew Tegid') (f. 60) = Also included are hymn tunes by R[owland] H[uw] Pritchard (f. 43), James Leach (f. 82), Chester G. Allen (f. 104) and others; a hymn by the Reverend D[avid] Tecwyn Evans (f. 48); and a copy of a chorus, together with a brief note, in the hand of 'L. D. J.' (Lewis Davies Jones ('Llew Tegid')) (f. 60).