I don't have any kids myself but I was one of the poor souls that had overprotective parents, that would "try" and prohibit me from doing stuff that they didn't find "good" for me, and it made me into a rebel instead of being good

I since then have done a bit of reading up on how teenagers get affected by parents using the "Don't do that ever" and "Do not listen/watch/play that" instead of sitting down and talking to their kids and guiding them

There are three groups of kids. Of course there are more but in the interest of this post I will limit it to three

1. won't be affected at all or very little. About 90% of all children

2. Will be "Mice". They will develop an unhealthy dependence on their parents and later in life on other people that might not nessesarily be good to them, but they won't be able to make decisions for them selves, because since childhood they have been prohibited from making them, thus never developing the skills to make good decisions and making them insecure.

3. (Unfortunantly the group that I fall into) "the rebel". they will, instead of following their parents orders, start to do the exact opposite. They will no grant their parents wishes a thought and it will often lead them into a downward spiral (antisocial, criminal and drug related bahavior), which in my case wen't on for about 10 years, before starting to get on track again. by some miracle I managed to never get jail time and now I have a much broader perspective on things, but that was lucky since jail makes that type of people get into even more trouble.

I am back in school now at the age of 27 instead of 17 and am again a A-student just like before it all started, but I'm one of the lucky ones. I am just 10 years behind instead of a whole life. The mice often lose their whole lives

I just wanted to point out the seriousness of parents making stupid rules instead of talking to their children. I want to also say that some kids have behavioral issues that talking won't do much help for, but those groups are all "normal" children

As for the type of music that you listen to. If you listen carefully to the lyrics you will find that a lot of it is very negative, and since you stated that your sister had psychological problems at a younger age, I can in a way understand your parents reaction to this issue. i think that they handled it the wrong way, but it would be a very good idea to get your parents to sit down with you and have a long talk. Be openminded when you do it. Make sure that you too listen to what they have to say, because if you sit down with the intension of "winning" you will find that you have gotten nowhere when you are done.

Talk to them about how the inplementation of rules affects you, and make sure that you give them the chance to explain them selves. Also explain to them that how music affects people depends on their state of mind before listening. it doesn't make you violent if you aren't of a violent nature allready. Also tell them why you prefer to listen to that kind of music.

Also if you are into the beats and not the lyrics. There is a lot of techno music out there. I know that it is very hard to find good techno music because there is just so much out there but if you look hard enough you will find something.

If you get your priviliges back, it would probably be a good idea to cut down a bit on the bands that you mentioned above, and using earphones when listening to them like someone allready told you in another post. Your parents will probably not be changed people just because you talk to them once. Also screen the lyrics before playing it when your parents are in range

Also try asking them for their oppinion on other things. Make sure to not alienate them. Don't give them the "I don't have time right now, later" answer when they try to talk to you.