Choral arrangements, mainly of folk songs, some of them pencil sketches and drafts, including 'Y cadno coch', 'Cyfri'r geifr', ‘Hen fenyw fach Cydweli’, ‘Leisure’ (words by W. H. Davies), ‘Migildi magildi’, ‘Y morwr tir sych’, ‘Wrth afonydd Babilon’, ‘Ystrad Fflur’, ‘Clychau Aberdyfi’, ‘Tri pheth’, 'Pwsi Meri Mew', ‘Y sipsi’ (geiriau gan Crwys) and ‘Y daffodil’ (geiriau gan I. D. Hooson). Attached to 'Cotiau coch Gogerddan' is a letter, 1961, to a 'Mr Jones'.

The tune book of John Williams, Tynyffordd, weaver, containing psalm-tunes, hymn-tunes and traditional Welsh songs.

A copy of Edward Jones, Musical and Poetical Relicks of the Welsh Bards ... (London, 1794), with a few annotations by John Dovaston. Among items tipped in are transcripts by Edward Jones of Welsh, English and Irish airs (ff. 1, 73, 106) and a letter from him to Dovaston, 16 January 1817, concerning Welsh folk-tunes and other national airs (ff. 74-75). The letter is in answer to Dovaston's letter of 25 December 1816, which is part of Cardiff MS 4.130.