This lesson is about combining the high 2nd finger (1st grip) and the low 2nd finger (2nd grip)
See how the flat/natural (G-string) and the natural/sharp (D- A- E-string) determines if we
have a low or high second finger.
Look at the beginning of each staff where you will see the key signature.
The flats or sharps affect the according notes on the whole staff and all octaves.
There will be one more update to the pages, for now page 49 has been removed to be able to fit the Canon in D (Nr 70) on 2 pages without having to turn the page.
In the next update this will be fixed.