In recent version of Windows/Bootcamp/keyboards this solution does not work but inspire me to find the solution searching for other occurrence of 'OSXFnBehavior' in antire registry. Afterwards my function keys worked as function keys without having to press fn.Keep that in mind when you undertake such an adventure. This was my luck, because the Mac did not recognise my USB stick without at least one quick connection to the Microsoft servers. The only thing it knew was my Ethernet port, and thankfully I had a wired connection at hand.

I am only able to enter the notes in the key of.

If you verify it is in fact the shift key. Try blowing out your keyboard with a can of air or if you have a canister vacuum and can reverse the hose. If not try the other shift key if it is the shift key, though only a workaround.