With Switzerland being a blend of German, French, and Italian heritage, music is a great way to combine all the good from those countries into something new (like what happens in America where cultures are "melted" together). Combining sounds from different places creates something new and beautiful, and dancing is a great way to have fun with those you know, and an even better way to make new friends.
Most Swiss traditions are connected to the environment in some way. For instance, cheese is important in Switzerland because many people in Switzerland used to be Alpine farmers. Since the milk from their cows and goats had to be preserved, Swiss people started making large blocks and "wheels" of cheese, leading to a tradition of cheese sharing-- which is why raclette is now so popular. And dancing is popular because most people love to dance for parties, festivals and celebrations.
