Island Kdrama tribute/ Never to Late by Bridges Ablaze

fair use
noun
(in US copyright law) the doctrine that brief excerpts of copyright material may, under certain circumstances, be quoted verbatim for purposes such as criticism, news reporting, teaching, and research, without the need for permission from or payment to the copyright holder.
"whether or not six seconds of the song in a user-generated video constitutes fair use is something for a court to decide.