tolong jawab nomer 1 sampai 7

1. Rock music is played and listened in almost every countries in the world.
2. The name given to the music developed in the early 1950's was rock and roll
3. Elvis Presley was a rock and roll singer
4. Elvis Presley's singing and his performing style came to mean rock and roll all over the world
5. Bill Haley and The Comets
6. Yes, i do. because the youngsters understood its beat and sound, and its lyrics
7. The 1970's were the time of big developments in the rock industry.