To fit the season, Winterstock will take place at the frigid (yet welcoming) Thorin's Gate on the Landroval server from January 17th through the 20th. The four-day event will showcase 19 bands playing in one-hour blocks during the afternoons and evenings for entertainment and amusement. Winterstock could be seen as the counterpart to summer's Weatherstock, which has been going on for years now.
The event is hosted by the Lonely Mountain Band and is available to all. A full schedule of the band times is up on the LOTRO Players site.