We know music is very important in our daily life. Do you notice music is playing at any of those places when you go somewhere? Today most shops, stations, restaurants and other places play music. You might even hear music in an office or on a farm. Scientists believe that music influences(影响) the way people behave(行为). They think that the sound of western classical music(古典音乐) makes people feel richer. When a restaurant plays classical music, people spend more money on food and drinks. When the restaurant plays modern music, people spend less money. Without music, people spend even less. Scientists also believe that loud, fast music makes people eat faster. Some restaurants play fast music during their busy hours. This makes people eat faster and leave quickly. Restaurants can make more money in this way. Which type of music below can make people work faster?