I stumbled on to this and thought I'd share – Keith Emmerson Happy Holiday Greetings 2009 YouTube video.
See other Kieth Emerson vids on his YouTube channel – http://www.youtube.com/user/KeithNoelEmerson
Electronic Music Artist, Composer, Sound Designer
Artist site: http://www.markmoshermusic.com
Host of Sonic Encounters Podcast: http://markmoshermusic.com/podcast/.
Boulder Synthesizer Meetup founder and host: http://www.bouldersynth.com