They may no longer wear hot pants, but they sometimes break into song.

Many people think of this classical music piece when they think "spring".

So the direction that music goes can also affect how we feel about it, our mood about it, so I think the next question-- I play another piece for you.

Then I heard it——the sound of a fire engine. It was music to my ears.

Maps (on paper or on the screen) are flat surfaces; they require a transformation from the curved surface of the earth to the flat plane: a map projection.