What kind of early 20th century music were Collins and Harlan known for?
Collins &amp; Harlan:  Their song "That Funny Jas Band from Dixieland", recorded November 8, 1916, is among the first recorded uses of the word "jas" which eventually evolved to "jass", and to the current spelling "jazz". Coon song:  They were popular in the United States and the United Kingdom from around 1880 to 1920, though the earliest such songs date from minstrel shows as far back as 1848.
i don't know