Quite deliberately, we reduce the keywork of the Seggelke-Line down to 21 keys, which still allows the playing of all important combinantions.

The buttons and key levers and their positions were designed by Jochen Seggelke together with F. A. Uebel GmbH to ensure optimal accessibility for as many hand sizes as possible. Spring tensions and keys are precisely checked and balanced during final assembly.

On the A clarinet, a bell mechanism can be added to optimize the intonation of low E and low F. This is operated by the right thumb. To ensure that the pusher is easily accessible, the thumb rest is mounted on a wooden plate. This opens up the right hand and provides an ergonomic support while holding the clarinet.