When did pop music and rock and roll first begin?

If you were to stage the play on which casablanca is based, how would you use lighting in your production? describe one scene from the film and the lighting it uses. would you change the lighting in any way for a stage production of the scene? why or why not?

What are the two types of orchestra found in singapore?

Which is more effective in transmitting information about a bird brancusis bird in space or john audubons wild turkey