Mechanical engineering (Indeed all engineering majors) need to complete only 1 cluster (Instead of 2).
http://www.rochester.edu/college/CCAS/students/curriculum/clusters.html#eng
The cluster may be in the humanities or social sciences. Dance falls into the humanities category.
UR currently offer 4 Dance-related clusters
Here are the specific courses for each:
https://secure1.rochester.edu/registrar/CSE/searchResults.php#H1DAN006
You would still need to fulfill writing and other department specific non-engineering requirements.