"Boys of Blue Hill", in Gaelic "Buacailli Ua Cnoc-Gorm", also known as "Beaux of Oak Hill", "Boys of North Tyne", "Cape Giradeau", "Lads of North Tyne", "Silver Lake" (Pa.), "Jenny Baker", "Lonesome Katy", "Two Sisters" or "Twin Sisters" is an Irish reel or hornpipe in D Major. The parts are played AABB (most versions)or AA'B (Moylan). In American tradition it is almost always played as a reel rather than a hornpipe. In the 19th century it appears in publications such as Ryan's Mammoth Collection (1883) as "The Boys of Oak Hill" (by which title it also appears in one of the Scottish Kerr collections). O'Neill said that the melody was unknown to Chicago Irish musicians when he made his collection. It was printed in Brody's Fiddler's Fakebook (1983), Cranitch's The Irish Fiddle Book (1996), Kennedy's Fiddler's Tune-Book, vol. 1 (1951) (appears as "Beaux of Oakhill"), Lerwick's Kilted Fiddler (1985), McDermott's Allan's Irish Fiddler (c. 1920's), Moylan's Johnny O'Leary of Sliabh Luachra (1994), O'Brien's Jerry O'Brien's Accordion Instructor (1949), O'Malley's Luke O'Malley's Collection of Irish Music (1976), O'Neill's O'Neill's Irish Music (1915), Krassen's O'Neill's Music of Ireland (1976), O'Neill's Dance Music of Ireland: 1001 Gems (1907), Roche's Collection of Traditional Irish Music, vol. 3 (1927), Spadaro's 10 Cents a Dance (1980), Sweet's Fifer's Delight (1964) and Tubridy's Irish Traditional Music, vol. 1 (1999). It was recorded by Derek Bell on Musical Ireland (1984), Diana Blackett-Ord on Wild Hills O'Wannie - The Small Pipes of Northumbria (1974), Gordon Bok on Tune for November (1970), Deseret String Band on Okehdokee (1973), Ted Furey on Toss the Feathers (1973/1967), James Galway on Annie’s Song (1978), High Level Ranters on Northumberland Forever (1968), Leo Kretzner and Jay Leibovitz on Dulcimer Fair (1981), John McGreevy and Seamus Cooley on McGreevy and Cooley (1974), Stan Ransom on My Long Island Home (1997).