For those who don't know, some fan recorded Tao singing.
To be honest I wanted to listen to it but Tao has feelings and personal space that should be respected no matter what. He may be a idol but there is a certain line that fans SHOULD NOT CROSS! 
How would you like it if a someone random that you didn't even know record you singing? Then posted it for the whole world to see? Oh by the way Tao actually commented on what happen too.

Tao’s update:
 

Playing as if this is very exciting isn’t it? When something is invaded to a certain extent, which is called overdoing. Get it? Don’t exceed things! I can ignore anything but this kind of thing happening to me is really too much ok? It’s fun right? Next time, come to the door and let me record for you. Like it? Just do what you should do. If you like (me), please do not go beyond it. OK? If you don’t, then please stay away from me. I do not need it. 

Also Tao's friend talked about this too.

Tao’s friend “张灰灰Locker”
Even he did not have this job; he could still live a life better than many ordinary people could. He does not care many things. Once he told me that he did not want very high popularity. He did not want to earn a lot of money neither. He just wanted to stand on the stage, enjoying the moment being with his fans under the spotlight. He just wanted to stay gladly with his friends and family. After debuting for so long, it was his first time to call me, saying that he was so exhausted!
[Yui] 
rough translations 

~

This is seriously going overboard.

I've read many saesang fan incidents and I can say this is probably the most shocking, disappointing, disrespectful, creepy stunts that some fan has ever pulled on an idol.

I know that you love your oppas and support them, but there's no need to take such drastic measures.

This kind of behavior is very wrong and very intrusive.

Fans always forget that just because your oppas are idols, it doesn't mean they don't have feelings and aren't affected by this sort of thing.

Well guess what?

They are!

And doing this is an invasion of privacy and is just wrong.

Our idols deserve/ are entitled to their personal space and should be treated with the same respect as one would treat a normal person.

And the worst part of it is that that fan released the audio online and it started spreading!

I mean come on, people! have a little class!

Tao even comment on this incident and he was VERY upset!

I don't blame him either, I mean he's only 17 years old and is still very young and vulnerable, and this sort of thing happening would only frighten his delicate soul even more!

So if you guys ever see copies of the audio on the Internet, request to have it taken down!

Respect Tao as well as all the other idols out there please, because they already have it very hard having to perform and fulfill their very taxing schedules, this is the last thing they need....

So please grow up and give our idols some R-E-S-P-E-C-T!