Variables in credits

[Romulator]

Also thank you for the copyright stuff! So you're saying that if I credit the author in my credits, it should be enough? Even for people might cover my cs?

It should be okay~ It may differ depending on certain circumstances, but general copyright law is 'creation -> owner's passing -> 100 years post death".

If you have any doubts whatsoever, don't use it It's better to avoid hitting copyright dilemmas than tackling them if you're not too sure. If you want to use other people's works while crediting them, be sure to google "Creative Commons music" or something along those lines. Sometimes you can find some amazing things so long as you follow the terms they state