We'd sound like Donald Duck on Venus. Furthermore, Venus' atmosphere contains far more carbon dioxide than Earth's, which is mostly nitrogen. Carbon dioxide absorbs more sound than nitrogen, causing sounds to be muffled and appear small or distant. The pitch of a note is determined by the length of time that it is played, so at a fixed frequency, the higher the note, the shorter the tone. Venus has an average surface temperature of 450 degrees Fahrenheit (232 degrees Celsius). Because metal heats up when exposed to heat, instruments would need to be made of some material that doesn't get too hot to touch under these conditions, such as wood or plastic. However, because wood expands when it gets hot, instruments would need to be tuned regularly to keep them in tune. Also, because oil and fat decompose at different rates when heated, meat cooked over an open fire would go bad before the vegetables become tender. To avoid this problem, food would have to be rotated every few hours during cooking. Electric lights would not work at such high temperatures, so people would need to rely on natural light for illumination. It is estimated that there are 10 million tons of rock on Venus' surface, most of it iron ore. This means that there is enough material to construct a large number of spades, picks, shovels, etc.