The steel drum was invented in Trinidadand Tobago in the1940s, and today it's popular all over the world. It's hard to believe, but this drum, with its sweet sound, is made from an old oil container. On Trinidad and Tobago, you can hear steel drum music on the beaches, in the market places, and especially during the islands' traditional festivals.

The didgeridoo is a long, woodeninstrument. Native Australians created it over a thousand years ago. Traditionally, only men played the didgeridoo, but today, musicians all over the world use the didgeridoo in everything from jazz to hip-hop music. Some people also use the didgeridoo for another reason. According to one study, playing it can help you breathe and sleep better.

The horsehead violin is the national instrument of Mongolia. Horses are very important in traditional Mongolian culture, and the violin is a symbol of Mongolia and its people. The instrument dates back more than 900 years. In the past, only men played it, usually at important cultural events. Today, many students in Mongolia are learning to play the instrument. By doing this, they are keeping their history alive.