Final answer:
The steel drum, also known as the pan, was invented in Trinidad and Tobago. It is the national instrument of Trinidad and Tobago and originated there. It is made from 55-gallon oil drums and can be assembled into a steel pan orchestra.
Step-by-step explanation:
The steel drum, known as the pan, was invented in Trinidad and Tobago. It is considered the national instrument of Trinidad and Tobago and originated there. The pan was originally made from 55-gallon oil drums, and the bottom was cut off at various levels to provide different sounds. The top part of the drum is then shaped into a chromatically pitched percussion instrument. With a pair of straight sticks, it is struck to produce music. The instrument has gained popularity outside the Caribbean as well, and an entire family of pans has been developed, which can be assembled into a steel pan orchestra.