ON VERY RARE OCCASIONS IN THE HISTORY OF THE MUSIC CHARTS, AN ACT HAS REPLACED ITSELF AT THE NUMBER ONE SPOT.
THE FIRST TIME THIS OCCURRED WAS IN 1956, WHEN ELVIS PRESLEY HAD A #1 HIT WITH HOUND DOG. ELVIS THEN REPLACED HIMSELF AT THE #1 SPOT WHEN LOVE ME TENDER TOOK OVER THE NUMBER ONE SLOT.
BUT ONLY ONCE IN MUSICAL HISTORY HAS THE SAME ACT REPLACED ITSELF AT NUMBER ONE, THEN REPLACED ITSELF AT THE NUMBER ONE SLOT AGAIN.
WHEN DID THIS UNPRECEDENTED FEAT OCCUR?






