How to create a folder I can lock with a password on my iPhone?

I know I can lock my iPhone all toghether by setting a password, but I just want to know if this can become selective in a way. Like, of I don't mind people having access to my music but not my messages or a certain application, is there a way I can lock them separately? Maybe if I could create a folder to put them all in and lock that folder alone?

Go download this free app called hide it pro you can't beat it no joke