The National Association of Teachers of Singing endorses a strict policy regarding copyright laws. The use of photocopied music is prohibited at all NATS sponsored events, from the national to the chapter level.

Exceptions are:

1. Music that is out of print, still under copyright law, with permission from a publisher.
2. Sheet music or books for which the copyright has expired, but available in CD format. (e.g., CD Sheet Music). Performers must be prepared to present proof of ownership upon request.
3. Sheet music purchased legally from an online vendor. Such music should have either a separate page proving the performer has purchased such or a copyright notice at the bottom of the music that includes the performer’s name. Performers must be prepared to present proof of ownership upon request.
4. Music available from approved public domain websites. Performers should take particular care when accessing these sites as some do not guarantee that all works are indeed in the public domain. Current approved online public domain sites are:
   www.imslp.org
   www.sheetmusicarchive.net
    
   Note: If IMSLP or another site is used contestants should print a copy of the page that shows the download link to that file: such as this page for “Abendempfindung” and provide it as proof when requested.

Following the lead of the TEXOMA region, the Oklahoma District will include a “Statement of Compliance” on our teacher registration form that requires each teacher to check a box indicating that they have read and agree to follow the policy laid out by the NATS National office. By checking the box, they also agree that their students and accompanists will also follow the policy laid out by the NATS National office. Students of any teacher who does not agree to the statement of compliance by checking the box will not be allowed to compete. Having such a statement of compliance means that judges will not and should not police the use of photocopies during the auditions.

Note: This policy was changed in January of 2010 in response to a mandate sent out from the NATS National Office.