FLAT CAP. English, "Old" or Triple Hornpipe (3/2 time). F Major. Standard tuning (fiddle). AABBCCDDEE. The melody appears in Thomas Marsden's Collection of Original Lancashire Hornpipes, Old and New, published in London by Henry Playford in 1705 (p. 26), and in Walsh's third collection of Lancashire tunes (Lancashire Jigs, Hornpipes, Joaks, etc.) published around 1730. It appears in Marsden's collection as "Flat-Capp, An Old Hornpipe", and was apparently considered old when it was published. The tune belongs to a fairly large family of English triple-hornpipe tunes that includes such titles as "Punchanello's Hornpipe," "Three Rusty Swords," "Johnny Cock up Thy Beaver," "Lady Susan Montgomery's Hornpipe," "Christmas is Coming," "Knives and Forks," "Three Sharp Knives," "Wee Totum Fogg" and others. Thomas M. Ward  observes all triple hornpipes are in four-bar variation form, "one of the most distinctive and restricting in British instrumental music." Certain tunes (like "Flat Cap"), he notes, were taken up repeatedly, "some so often and under such a variety of titles that choice of a family name can be quite arbitrary."
Source for notated version:
- John M. Ward, "The Lancashire Hornpipe", Essays in Musicology: A Tribute to Alvin Johnson, 1990, pp. 140-173