According to Wikipedia,
Since I am not very urban myself, I went looking for some representatives of this somewhat imprecisely defined culture. As you can see I found some. These are all dressed up in black & white, so they should at least fit in with the latter part of the definition and be ready for the most advanced cultural events.
In the US and UK, "urban" is often used as a euphemism to describe hip hop culture or subsets of black culture; being these defined groups as a type of urban tribe. Hence names for cultural artifacts like urban music could be seen as a new term for "Race music". It can also refer to the greater availability of cultural resources (such as art, theatre, events, etc) as compared to suburban or rural areas.