Can anyone enlighten me as to the benefits of the c# trill key? My new flute has one and I have noticed that it makes several trill fingerings easier, esp. high G-A. But are there other practical uses for this key that I should know about? I thought I heard one time that it could be used for adding color to the actual c# pitch, do you just depress it alone?

all I know is it costs more, but seriously, I think there are some other trills you can do with it as well..

Thanks for the link, Suzie. Below is what I had heard regarding the c# being able to be colored more. It works! And the high G-A trill is amazing and in tune!!

"Debussy C#: The middle C# which opens L�apres-midi d�une faune is often raw and hard to color. Use the C# trill while fingering B natural, and you will get a C# which is full and able to be colored without losing pitch, since the resistance of the note is increased."

I got such a great deal on this flute that the addition of the split e mechanism (which I grew up playing on and personally love), c# trill and B foot were only $107! Can you believe that??