Which artist (B. 1930), credited with changing the face of the American musical, developed a new style of the form featuring disturbing plots, an ironic tone, and sophisticated intricately, rhymed lyrics (in such works as Sweeney Todd, Sunday in the Park with George, Into the Woods, and earlier, West Side Story)

Stephen Sondheim

i got this answer from a really friend, and it was right.

hope this you like it me and a special to that dude!

artists need to create a realistic interpretation so that people in general can relate to the artwork. for a common people, an artist's impression gets increased only if he can create something which would look realistic. an abstract is difficult for a common people to understand whereas if a person can draw a girl with simple pencil sketch and if that looks like a real figure then the latter will be praised more than the former.