There was a discussion about why pianists often repeat a same key with different fingers: Which fingering to use when playing the same piano key twice in a row?
My question is: does it only apply to right hand, or left hand as well?
FYI I'm learning to play Bach's minuet in A minor BWV Anh 120 and it has many instances where the same key is repeated three times in a row on the left hand.


