New answers tagged fingering
1
I don't think it has to do with legato, at least not in the way ecline6 suggested, because if you're using 4th finger for the top d#, the f#-d# stretch would still be a problem (at least it's for me), and the switch should be marked on the first beat instead of the second. In fact, the only working fingering for using 4th on d# I can think of is to use 1-1-2 ...
8
They are assuming you are using finger 4 on the top D#.
The reason to switch from 2-1 is that if you ended up with 3rd finger on the G# and 4th finger on D# above, it is too far of a stretch. If you are playing the high D# with 5th finger it won't feel so uncomfortable, but then you can't connect the melody notes with finger legato. The finger switch ...
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