I believe in giving a short or full length feature film the full treatment, regardless of the extra costs involved in paying for the rights to music licensing. If you're a serious artist, there's no excuse in trying to cut corners.
Now with that said, I'd like to share with you guys the reason why all claims on intellectual property are nonsensical and illegitimate. https://mises.org/library/case-against-ip-concise-guide.
No one owns ideas, and as far back as Thomas Jefferson, this was well understood: "If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it. Its peculiar character, too, is that no one possesses the less, because every other possesses the whole of it. He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me". We should do away with these barriers to entry.