I was playing Bach Invention 1 when my sister told me that I was playing it wrong.
When I learnt this piece like 10 years ago, my sheet looked like this.
But my sister showed me her music sheet from her book, and it looked like this. (Sorry for the bad quality)
So I the difference here is the mordent in the 4th beat of the first two bars. I remember it being a (normal) mordent, but in my sister's book, it's an inverted one.
Here is my question.
- Why are there two different versions?
- Is there a single correct version? According to Wikipedia, it says that in the Baroque period, the mordent was a lower mordent. How should I interpret this?