In our Geo Quiz, we're off to an African capital. We want the current name of the city -- and the old one too. If you can name one of the kings of Belgium, you're getting really close -- to the old name, at least.

This city was once the capital of Belgium largest colony in Africa. Today, this city is still a capital -- of the Democratic Republic of Congo.

It sits on the Congo River -- just across from the capital of another African nation. The two combined form a metropolis of more than 9 million people.

Even on its own, the city is one of the largest cities in sub-Saharan Africa. It's also a musical hothouse. We'll hear one of the musical flowers from that hothouse in today's Global Hit.

First though, you have a few minutes to name the city.