Hip-hop songs can help metal illness

I read an article about how hip-hop can help people to recover from the mental illnesses.
I didn't have no any idea, why Hip-hop? (Sounds more natural: I don't have any idea, why hip-hop?) I like any kinds of (choose between: all kinds of or any kind of) music except country music but hip-hop tends to contain unspoken words about sex , violence and drugs.
Cambridge University has a hip-hop therapy. (more natural: Cambridge University has a hip-hop therapy program.) They believe that the lyrics of hip-hop can reach out to people who have emotional problems. The lyrics seems to be representative for the people who have been getting through a tough situation. (more natural: The lyrics seem to be relatable for people who have been going through a tough situation.) It speaks (more natural: It says )where people wants to be, what people wants or wants to do. A while ago I wrote that the contents of hip-hop are negative things but not only that, it speaks of overcoming hardships and big difficulties also, it also has hopes in it.
I don't think all of the hip-hop can be used for the therapy but I totally agree with the article.
Music is powerful, especially it's lyrics. People can sympathize with it and see hopes in their lives.

[Good job! That was a difficult article for you to write, if you have questions about my corrections just leave a comment and I will try and explain it for you. :) ]