Some of these keys are for alternate fingerings. These can be used for the reasons such as:
- Intonation. Some alternates are flatter or sharper and sound better in particular intonation settings.
- Ease of use. Some melodic lines can be a wee bit tricky with normal fingers, and this is when alternates come in to save the day!
There is also such thing as half and quarter holes! Incredible! Its a simple concept really. Some notes, like G, require the first finger to be rolled back to allow this note to speak best. The G# requires an even greater roll back, so only a bit of the finger still covers the hole. Don't roll all the way off tho, that would be no-holing!
There you have it! You are so close to being a pro i can almost smell it!
*no i don't think you are a kind of candy