Don't use a matchbook, your elbow, a spare toe, or masking tape. Use the Key Dog to hold down a key on any synth, organ or EP. The Key Dog sits obediently on a key and holds it down for as long as you want. And like a real dog it's color-blind: it handles black and white keys with equal ease.
Fits on any regular-sized keyboard and almost all minikey keyboards. A slot along the upper edge provides excellent grip for your fingertips. Rubber on the bottom keeps it from slipping out of place.
You might think that a sustain pedal does the same job as a Key Dog. In some situations this is true. But during a performance you might need to instantly turn a synth sound into a drone without having your body locked in place to hold down a sustain pedal. Another benefit comes about during improvisation: the Key Dog provides a visual indicator of the note that's being sustained. If you're feeling fancy (like me) you can use 2 or 3 Key Dogs to hold down chords.
Key Dogs are cut on a high power industrial laser, which causes a visible deformation at the point where the cut begins. While some might consider this to be a flaw, we like the rugged, industrial look.