Where should we stand for the best view of a painting? and what is the viewer's place in the painted scene?

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?

What effect does distress usually have?

What is a principle of design that repeats elements to create good visual flow?