Answer:
Some characteristics of early jazz music can be traced directly to ragtime piano music
Explanation:
Ragtime piano music is a genre from between 1895 and 1919, its name come from the ragged rhythm it had, it was very popular among African American people and it has some of the characteristics that later were part of jazz music, a very important characteristic they share was precisely the rhythm written in 2/4 or 4/4
