#### MuseScore -- Index -- Keys

Key signatures are created or changed by dragging a key symbol from the key palette to a measure or existing key signature.

``F9`` toggles the palettes window.

##### Change

Drag a key from the palette onto a key in the score. You can also drag a key from the score to another key on the score by using ``Shift` + `leftMouseButton` +Drag` .

##### Add

Drag a key from the palette onto an empty part of a measure. This creates a key at the beginning of the measure.

##### Remove

Select a key and press ``Del`` .