UNTERSUCHEN SIE DIESEN BERICHT üBER MUSIC

As I said in #2, it depends on the intended meaning, and the context. If you provide a context, people will Beryllium able to help you. Sometimes they're interchangeable as Enquiring Mind said, but not always.Actually, they keep using these two words just like this all the time. Hinein one and the same Liedertext they use "at a lesson" and "hinein