Charts, tables, graphs, and other visualizations of data present complicated situations: see Copyrightability of Charts, Tables, and Graphs from the Copyright Office of the University of Michigan Library.
To request permission to show a motion picture publicly: Many studios are represented in the US by one of two organizations:
To request permission to perform a musical work live or to play a recording of it live: Major musicians are represented in the US by one of the following performance rights organizations (PROs):
You can often contact the appropriate one of these organizations (whichever of them includes the work in its repertoire) rather than trying to reach the musician directly. UNT has blanket licenses with BMI, ASCAP, and SESAC allowing for performances of works in their repertoires on campus and at certain UNT-sponsored events off campus, but these blanket licenses do not include the right to use the works in dramatic settings, such as the theater or opera, so you would need a separate license to perform a work in a dramatic setting on campus. For questions about UNT's blanket licenses, contact Jon Nelson.
Otherwise, try to contact the copyright owner. This is often the creator or publisher of the work. For digital images and other computer files in which the owner is not plainly featured, try looking at the file's metadata properties to see if either is recorded there.
If you are unable to determine who the copyright owner is or reach that person, the following entities may be able to assist you in obtaining copyright permission:
You may also consider contacting the United States Copyright Office for help in locating a copyright owner, but note that this office does not have complete records of all copyrighted materials.
In the case of a creator who is no longer alive, you can search for genealogical records or simply search the web to find possible heirs of copyright.
Completing such searches, even if they are all fruitless, can establish that one has completed his or her due diligence in attempting to locate a copyright owner, if use of a copyrighted work is ever questioned. Therefore, be certain to keep appropriate records that verifies you have completed these searches.
When requesting permission to use a copyrighted work, ensure you receive permission in writing in order to create documentation of the grant of rights. The UNT Libraries offer a sample submission request letter that authors may use:
These matters do not relate to copyright law, but there can be other legal implications. UNT offers a Subject Release Form designed for getting permission to use someone's image in a multimedia work created by UNT (such as a promotional video).
For a personal project (in which UNT would not own the copyright), you might use an agreement such as this one which respects the rights of the interviewee concerning the story or information that they provide but also allows for appropriate use of the interview materials.