What an aulos might have sounded like

By about 3100 BC (if not earlier), musicians in West Asia and Egypt were making instruments that could produce different pitches: high and low notes. The first wind instruments may have come from Egypt, even before the beginning of the Old Kingdom. These were hollow reed pipes with holes in them to put your fingers on to vary the pitch. Some probably had reeds in one end that you put in your mouth, like a modern clarinet. Musicians sometimes played one pipe, and sometimes played two pipes at the same time, one with the fingers of each hand. By about 1800 BC, in the Shang Dynasty (if not earlier), people were also playing pipes in China.

    Playing a Chinese qin 

The earliest stringed instruments may have come from West Asia, where the Sumerians built thin lyres as early as 3000 BC. By 2500 BC people in northern Syria were also playing lyres, and by about 1900 BC, in the Middle Kingdom, Egyptian musicians had also learned to play the lyre, though lyres did not become common in Egypt until the New Kingdom. By 200 BC, people were playing stringed instruments like the qin in China, too.

The earliest lutes - a lyre with a neck like a modern mandolin - were also from West Asia.

We don't know what this early music sounded like, because there was no way to write down notes or to record music. We can tell from pictures and from descriptions that people sometimes played their instruments alone and sometimes in groups, and that they probably played songs with verses and choruses as we do today.

Blowing a shofar, or ram's horn

By about 1500 BC, in the New Kingdom, people in Egypt were playing bronze trumpets as well as flutes. (But it's possible that trumpets existed as early as the Old Kingdom). At first musicians seem to have mostly played trumpets for the army. They were also blowing through cow and goat horns to make music.

Medieval Gregorian chant

Around 300 BC, Greek musicians worked out ways of writing down notes to describe songs. Soon afterward, thanks to the Greek conquest of Egypt, Egyptian musicians  also used the Greek method to write down songs.

In the Middle Ages, about 1000 AD, Christian monks in Europe began to use a new method of writing down notes, the ancestor of the system we use today.