https://www.youtube.com/watch?v=ulvmdYMyT80
One_In_A_Million.mp4
Bullshit.
The blues came from the British Isles. An early blues song is Greensleeves. Greensleeves is a song about a man who was taken advantage of by a woman and then rejected. It dates from the late 1500s.
The first recorded jazz song was Livery Stable Blues by the Dixieland Jass Band (a 100 %ly white band), recorded in 1917. Band member Nick Larocca claimed to have invented jazz and his music is the first known examples of it.
Rock and roll is often claimed to be speeded up blues. This claim ignores the influence of white country music in rock and roll. Either way rock and roll developed from white music. The first known recorded example of a rock and roll song is Move It On Over, recorded by Hank Williams in 1947. It was the template for songs such as Rock Around the Clock and Roll Over Beethoven. Was Hank black or white?
Oh, and the term "rock and roll" was used by whites in the 1800s. For example, it was mentioned in one of the Little House On the Prairie books, set around 1880. It probably refers to the motion of trains. Black supremacists try to credit blacks with inventing the term, using a preposterous explanation.