I am seeking language for a simple cancellation clause for a letter of agreement between an organization leasing the rights to a temporary project and the artist.  The organization will be taking on the administration and much of the implementation of the project. The artist will monitor the project to make sure it conforms to her ideas and concept.  Responsibilities for each side are clearly outlined in the letter so any "breach of contract" is limited to situations where responsibilities are not met.  Traditional cancellation clauses focus on timeline, fabrication quality issues which in this case do not apply, etc. In this case the artist's involvement is limited to approval of the implementation by the sponsoring organization.

Thanks!