For today's Geo Quiz, we were looking for a city in the rainforest.

The answer is Manaus, in Brazil.

Manaus is the capital of Amazonas state. It's at the heart of debates over the future of the Brazilian rainforest. The World's Alex Gallafent explores the history of the city through one of its most famous landmarks: the opera house.

Engelbert Humperdinck's Hansel und Gretel at the Teatro Amazonas, Brazil

Read Alex's blog post from the night he went to the opera

Jamil Maluf is chief conductor of the Sao Paulo Opera. Here he describes the state of classical music in Brazil.

For comparison, take a listen to our story about Venezuela's successful National System of Children and Youth Orchestras

Alex Gallafent recently traveled to the Amazon region. Read all about his trip here.