Rock n roll in the 1950s began as _____ What will be an ideal ...

[jessicacav]

Rock n roll in the 1950s began as _____
 
  What will be an ideal response?

Question 2

Urban blues, which also arose in the 1940s, is associated with such artists as ____
 
  What will be an ideal response?

[SomethingSomething]

Answer to Question 1

 white covers of black rhythm and blues. That is, other versions of original songs, created in this case by white performers who were copying songs originally performed by black artists. Rhythm and blues (R & B) was a label for black American popular music of the 1940s to the 1960s. R & B had a strong dance beat and added a saxophone and/or some other horn(s) to the usual guitar-dominated urban blues band.

Answer to Question 2

 T-Bone Walker and B. B. King

[jessicacav]

Thanks for the timely response, appreciate it

[lcapri7]

Gracias!