A introduction to the rhythms of Latin music and the introduction of Latin/African/Jazz music in NYC during the 20th century. Two of note: the 5 beats of "shave and a haircut - two bits" and the very fast triplet which is clapped (or accented on drums) on 2, 3.
A large migration in the 1920's of Puerto Ricans, who had been listening to more developed radio programs from Cuba, arrived in NYC and lived in Harlem/East Harlem. American-born musicians also were influenced and became stars of the genre, like Tito Puente.
"American Sabor: From the Palladium to the Bronx" on April 17, 2013 at the New York Public Library of the Performing Arts.