music theory

[henrikhank]

Pax et bonum!
I've just started learning the song Death on two legs by Queen.
sheet music: https://www.queensongs.info/sheets/death-on-two-legs.html
Both pdf-files have the same chords but in the first pdf it's 6 Sharps but in the second it's only 5 sharps.
Could someone explain this?
and if week look at the second pdf we see a change of the key in line 4. BUt hasn't the key already been changed with the chord Em?

[j_menz]

It's just a different "spelling".  You'll see the differences in how this works from bar 3 on.