A composite volume containing two treatises in Welsh on angling and musical theory, three lists of tune titles, and a large collection of tunes, compiled by John Thomas for the violin, some from printed sources and others written down from oral tradition. The tunes have been published, with related notes, in Cass Meurig (ed.), Alawon John Thomas: a fiddler's tune-book from eighteenth-century Wales (Aberystwyth, 2004).
A composite volume including a printed copy of Goulding and D'almaine's German Flute Tutor ...; a treatise on music with particular reference to instrumental music; a collection of Welsh and English airs followed by some poetry by Robert ap Gwilym Ddu and Dewi Wyn o Eifion.
A composite volume comprising a manuscript copy of an English text-book entitled 'An introduction to Psalmody, of Tuning the Voice, with several Graces necessary to Harmony'; extracts from a book on the 'Keyed Bugle'; a Welsh treatise on music; and a few Welsh and English airs.
A volume of mainly Welsh and English airs and songs collected by Evan Jones ('Ifan y Gorlan'), harpist, of Gorlan, near Llanrwst. A list of contents in J. Lloyd Williams's hand is included.
A small volume containing Welsh and English tunes. In 1833 the book belonged to John Williams, Llanfachreth, but the tunes were transcribed by another person, possibly at the end of the eighteenth century.