If music is to continue to support the livelihoods of artists, it cannot be taken without the permission of artists.

Metals are strong and are useful for making tools, buildings, bridges and other structures where strength is important.

Aluminum is a good conductor of heat and is often used to make cooking pots.

Copper is a good conductor of electricity and is often used for making wires.

While aluminum is the most common metal found in the Earth's crust, the most common metal found on Earth is iron, mostly because it makes up such a large part of the Earth's core.