Rock and roll
Rock and roll (often written as rock & roll or rock 'n' roll) is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s, primarily from a combination of African American blues, jump blues, country, jazz, and gospel music. 蓝 调, 跳跃蓝调, 国家, 爵士, 和 福音音 乐 Though elements of rock and roll can be heard in country records of the 1930s,and in blues records from the 1920s,rock and roll did not acquire its name until the 1950s
American Music
POP JAZZ COUNTRY HIP-HOP RAP ROCK BLUES ETC..
Jazz
Jazz is a musical style that originated at the beginning of the 20th century in black communities in the Southern United States. It was born out of a mix of African and European music traditions. Its African pedigree is evident in its use of blue notes, improvisation, polyrhythms, syncopation and the swung note. 蓝色笔记, 即兴, 复节奏, 中 略 和 摇摆音符。From its early development until the present day, jazz has also incorporated elements from American popular music.