 360 deals means that the label takes a piece of everything that happens in your career, from touring to merchandising, IP, publishing, everything. Remember, at the end of the day, these record labels, they're just banks loaning you money at a high interest rate. If you take advantage of that situation properly and utilize that big machine, it may pay off. But if it doesn't, you may be stuck in a deal where you can't do anything and they own everything, so you can't really go out independently and do anything else.