If you include a music clip as part of a research presentation for fellow classmates during a university lecture, then copyright law:
will require that you pay compensation to the original creator of the music before you are allowed to use the clip in your presentation.
will allow reproduction of the music during the presentation without the original creator’s permission, based on the ‘fair use’ principle.
will prohibit you to do so, as you will be breaking the law, specifically the South African Copyright Act No 98 of 1978.
will require that you contact the original creator of the music and ask permission to use the clip as part of your research presentation.