This Is Social Studies I am in 4th grade pls help

Ineed some on finding music. i have a nephew who is into rap, but when i find a rap song, it seems to either be too old for his taste or to him it isn't good enough. can someone suggest some good music for me to see if he likes it or not?

True or false matisse was afraid to risk using wild colors in his work

The dynamics of a musical piece refer to the a. key signature b. composer’s history c. volume changes d. instrumentation