One for the older members - anyone younger or not into history, look them up.
Edward Heath first met Jack Jones in Spain on the edge of one of the Spanish Civil War's bloodiest battles - Heath was part of an Oxford University delegation, Jones was fighting with the republicans.
Thirty years later as leader of the opposition, Heath had five leading trade unionists to dinner at his flat and was encouraged to do a bit of tinkling on his piano - Vic Feather asked Heath to play The Red Flag for Jack and he did.
Mike Yarwood was not present.
(By the by Jack Jones reportedly had far more time for Ted Heath than Harold Wilson)