Who created A Bard’s Plea in Blades of Destiny?

Within Blades of Destiny, A Bard’s Plea is attributed to an anonymous bard. Breanna and Toal encounter her when they stop at a remote dun, or hillfort, in the Cuilcagh Mountains. The bard describes the song as an ancient reel passed down through the ages by bards. It tells how Erin’s Hero was claimed by the Heart of Destiny. That account is the bard’s explanation within the novel. Unlike the three signature songs attributed to Bláth, A Bard’s Plea comes to the characters through an unnamed performer and a tradition of transmission. Its published adaptation can be found on the A Bard’s Plea music page.