The source is the Burns song 'Ye Banks and Braes', which I selected more or less at random from an old songbook. I arranged the notes as instructed and played the resulting sequence on a recorder. The track has two parts and in the first I duplicated the recording several times, made various alterations to the pitch and created a round or canon, adding a degree of delay and reverb. The second part is the result of playing the notes in a totally random order, again with some additional delay and reverb.
More on the 693rd weekly Disquiet Junto project, Melody Sorted — The Assignment: Reorganize a familiar song note by note — at https://disquiet.com/0693/