Here is a video of Waka Flocka Flame in the recording booth. He is recording backing vocals for the Yo Gotti track "Blow Yo Ass Off".  The video is funny because it's completely out of context, but when you listen to the completed track it all makes sense. Here are both the videos.

Recording music isn't exactly what you think.  It doesn't matter what kind of music it is, there is more to it than you think. Putting a song together is like a baking a cake, individually the ingredients aren't that great, but all mixed and baked up, it's good.