Andrew Kuntz (click):

PRETTIEST (LITTLE) GIRL IN THE COUNTRY(-O). AKA ‑ "Prettiest Little Girl in the County‑O," "Purtiest Gal in the Country." AKA and see "Old Aunt Jenny," "Prosperity Breakdown." Old‑Time, Breakdown with Vocals. USA, fairly common in the South. G Major. Standard. ABB (Titon): AABB (Rosenbaum). The tune is similar in its melodic countour to "What're We Gonna Do with the Baby‑O" and to "Turkey Buzzard." R.P. Christeson notes similarity to his "Sugar in the Coffee" (Old Time Fiddler's Repertory, vol. II, No. 129). "A popular 19th century fiddle and play party tune well remembered by older informants across the South" (Charles Wolfe). Jeff Titon says the tune is generally well known in the South, but not frequently found in the repertoires of Kentucky fiddlers. Alan and Elizabeth Lomax recorded the tune for the Library of Congress from the playing of fiddler George C. Nicholson. See also Thomas Tally's No. 41. Verses are commonly sung to the last line of the 'B' part, such as:
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Cornstalk fiddle and pea vine bow,
Gwine take Sal to the party.
Swing 'em like you love 'em,
The boys are not above 'em.

Little more sugar in the coffee‑o,
Swing Sal to the party.
Prettiest little girl in the country‑o,
Mommy and Daddy told me so.    (Skillet Lickers)
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Prettiest little girl in the country‑o,
Papa and mama both said so.
All dressed up in calico,
I'm gonna take her to the party‑o.

I can get her if I want her,
I can get her if I want her.   (Gordon Tanner)
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Prettiest little girl in the county oh
How do I know, cause she told me so.   (Gene Goforth)
***
Sources for notated versions: Gordon Tanner (Dacula, Gwinnett County, Georgia) [Rosenbaum]; Jake Phelps and Street Butler (Pea Ridge, Todd County, Ky., 1965) [Titon]. Rosenbaum (Folk Visions and Voices: Traditional Music and Song in North Georgia), 1989; pg. 111. Titon (Old Time Kentucky Fiddle Tunes), 2001; No. 129, pg. 156. Berea College Appalachian Center AC002, Clyde Davenport – "Puncheon Camps" (1992). Columbia 15315 (78 RPM), Clayton McMichen (1928). Davis Unlimited DU 32028, W.L. Gregory – "Homemade Stuff" (1978). Folkways FTS 31062, "Ship in the Clouds: Old Time Instrumental Music" (1978. Learned from the Gid Tanner and Riley Puckett recording). Rounder 1023, Gid Tanner and His Skillet Lickers (North Ga.) ‑ "The Kickapoo Medecine Show" (1980, originally recorded 1924). Rounder CD-0388, Gene Goforth – "Emminence Breakdown" (1997). Voyager VRLP 328‑S, "Kenny Hall and the Long Haul String Band" (learned from the 1924 Skillet Lickers recording). Recorded for the Library of Congress by W.A. Bledsoe (Meridian, Mississippi), 1939.