C# Trill Key:
So named because it moves the B- C# and C- C# trills from the left hand to the right, while facilitating numerous other high-register trills.
Available on flutes with either in-line or offset G keys. When fingering E, a bridge mechanism closes the lower G cup independently from the upper G cup, correcting the venting for the E3. E3 can be produced at any dynamic level with security.
Also enhances E3 production. When made from a synthetic material, it is included in every flute at no extra charge. If made from the same metal as the flute, it is offered at a small additional cost.