Time Out says
Though thick socks and radiators may be the more traditional way of staying cosy during winter, this day of free singing and dancing workshops and performances will be great way of warming up both bodies and voices. Learn a vocal part in the singing workshop (noon-12.45pm) or join the open dance workshop (12.45pm-1.30pm) for a more active part before watching a performance (2pm-2.30pm) and joining in witht he final song. The audience will be invited to join in with seasonal songs following the performance, too.
The Winter Jam is part of the Southbank Centre's Winter Festival