Advocates of the wraparound check in key say it improves sound, and it is more difficult for moisture to acquire in the tube below the pad. Nevertheless, there's a consensus among repair techs
that this form of check in key is more durable to hold in adjustment, i. e. , it is hard to have enough spring force to shut the outlet securely. The body of a fashionable soprano clarinet is equipped with a large number of tone holes of which seven six front, one back are covered with the fingertips, and anything are opened or closed using
a set of keys. These tone holes let the player produce every note of the chromatic scale.