Henri Herbert, keyboard player with the Jim Jones Revue, https://www.youtube.com/user/JimJonesRevue gives an impromptu performance on the concourse of St Pancras International station, London.
Note: in order to clear up some confusion expressed in the comments with regard to the sound on this clip, the stereo audio recording was made independently of the camera (which has poor sound) and later synched in post production. The 'percussion' sound that can be heard is not a hi-hat or a sn