Tony Jackson, by all accounts was a wonderful pianist, composer, singer and all-round performer who wrote catchy tunes and songs at the drop of a hat. Like many of his day, much of his output was unpublished, but one song that was published - and sold millions of copies of sheet music worldwide - was "Pretty Baby". This was published in 1916 but was probably written around 1910. I'm capo'ed on the 3rd fret and playing it in G on my Chisholm mid-jumbo ("No. 18") guitar.