Rock? I'm not too sure. It's not a 20th century music, but it did come from these genres.
Hope I helped!
Person against person
This is the most common type of conflict both in fiction and in life, and it can form the basis of the main conflict in your novel. Alternately, you might have a series of smaller person against person conflicts that may or may not be part of the larger conflict.
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The camera obscura later became a popular tool during the Middle Ages and the Renaissance, particularly after inventors began using biconvex lenses to brighten its images. Astronomers used it to protect their eyes while observing the sun and solar eclipses, and artists employed it as an aid in portraiture and landscape painting.
Explanation: