Low Down Blues
The original version was recorded by Whistler's Jug Band on April 29, 1927 in St. Louis, Missouri, with Whistler (Buford Threlkeld) on guitar, nose whistle and vocal, Willie Black on banjo, Jess Ferguson on fiddle and Rudolph "Jazz Lips" Thompson on jug.
Whistler must have used something like a harmonica rack to hold his nose whistle, since he was able to transition from nose whistle to voice seamlessly, while playing guitar.
While the nose whistle and fiddle play the lead parts in this song, the relatively subtle banjo part by Willie Black is an endless stream of nice licks.
Documents: Banjo Tab
This version is available for purchase on the Golden Harvest album.