After the initial mad burst of popularity from about 1840 to 1850 which included many African American caricature songs in the Minstrel repertoire, the repertoire of the vastly expanded number of troupes became much more general and included a great number of comic and sentimental songs with no African American content whatsoever. These troupes were also very popular in Britain and some of them were even all British performers. However they did still black up. Their popularity in Britain continued at a pace until about 1910 and then other forms put them in decline until after WWII when they had a brief revival on TV. The B&WMS did include a lot of the songs from the shows but some of them were still the old type of caricature songs. The fact that Pierpoint's song was appropriated by the Minstrel troupes shouldn't detract from its usage in modern day. The Minstrel Troupes at some point sang just about everything available. Do we chuck out the whole lot?