MeaningMatters

Baltimore Symphony Orchestra encourages amateur/rusty musicians to play with them onstage.

http://www.washingtonpost.com/wp-dyn/content/article/2010/02/03/AR2010020303579.html

A recent Los Angeles Times story described the phenomenon of adults beginning to take piano lessons and scheduling social piano playing at “piano parties” in people’s homes. See Perri Knize’s book "Grand Obsession: A Piano Odyssey."
http://www.latimes.com/features/books/la-ca-knize27jan27,0,1759200.story

It also mentioned an online website that supports social piano playing http://www.pianoworld.com/
For those of us who present piano recital series, it might be a good place to put information about future events, as well as to offer discounts for groups of six to ten people. For example, the Ark in Ann Arbor, Michigan posted information on the November 13, 2007 performance by George Winston. However instead of putting up a generic listing, it’d be great to have fans post-up concerts to which they’ve already purchased tickets.