Abstract: A clarinet and a flute of the woodwind family are provided with a case that holds the instrument firmly in position. The part of the case that opposes the instrument has a plurality of projections to close and hold closed all normally open keys when the case is closed, so that pressure on all of them is similar, so that there will be no malformation of keys or operating members. Thus, all keys will open and close as they are supposed to and the instrument will remain in good playable condition for a very long time. Although the invention is explained with regard to clarinets and flutes, it applies equally to all members of the woodwind family.