Lots of EDM progressive house drops involve many layers to make them sound full. I often read that, when layering leads together, it's a good idea to group them together in a bus and EQ and compress them. I understand the concept of bussing and its benefits, but I don't understand how/why compressing leads together is a good idea. Is it just to accentuate the transients? Or is it to kind of squash all the sounds together so that they sound as one? Because these 2 options seem like very different styles of compression.