Drummer Alec Morrison, guided by the tick of a metronome - an instrument used for beating time - taps out on a muffled drum the tempo of tomorrow's funeral March. Taking their time from him are drummers of the massed bands of the Brigade of Guards. Nearly all day yesterday they marched up and down at Chelsea Barracks, rehearsing their part in the procession. February 14, 1952. (Photo by Daily Mirror).