Tune book, late eighteenth century, containing psalm-tunes and some hymn-tunes, with some accompanying words in Welsh. Accounts and memoranda added, late eighteenth and early nineteenth centuries (ff. 51-62), including 'prophwydoliaeth Myrddin wedi ei chyfansoddi ar fesur cerdd yn y flwyddyn 1668' (f. 51), and 'the account of the stems that I have made in the work of Careg y mwyn December 1790' (ff. 60 verso-1).