Sciencegeek might be referring to this info from the link I posted above (10th post on this thread).

"The Sea Music Festival will debut several new features for 2012, including:

Sea Music Storytelling Stage: A dedicated storytelling stage co-sponsored by the Connecticut Storytelling Center and featuring gifted storytellers from throughout New England.

Sea Music School Age Festival: On Friday, June 8, local school groups will perform chanteys and music of the sea. These children will have the opportunity to workshop with professional musicians, see music in action on Museum grounds, and perform for audiences.

Sea Music Contra Dance: On Saturday, June 9, kick up your heels and enjoy live music and contra dancing at the Froshien Club, located directly across from the main entrance of Mystic Seaport. Admission to the Contra Dance is $8, and is included in the festival's all-access pass."

By the way, the other performer Geoff Kauffman told me was coming is now on the list. It is Archie Fisher.