Good one Sabai, temperature and sound. Here's a scientific trick involving temperature and sound anyone can do at home and it's FREE. It doesn't get any cheaper than that! All you need is plain old tap water. Everyone should be familiar with the relationship of heat and sound, that sound travels faster through warm air than it does through cold air. So you can easily control how sound waves travel through the air in your room by placing bowls of very cold water out in front of the speakers in a row, let's say 3 or 4 bowls depending on how big the room is and how big the bowls are. Thus when you listen to your favorite track you'll notice it's clearer, more open and more realistic. Because the sound waves are bending downwards due to the slowing up of the waves close to the bowls of cold water more sound reaches the listener's ears. Tell your friends.