This is a cool technique that can make your ‘ukulele sound like it is being played through a wah-wah pedal or some other kind of modulation effect. It is an interesting way to fade out the last chord of a song.

To play the arm-wah hold your ‘ukulele like you would to play a note, with your arm resting on the top-right corner of the sound-box (vice versa for lefties). Your arm should angle out and above the sound-board. Lay your arm on top of the sound-board bringing your arm parrellel to the bridge with your wrist pointing at the ground, then roll it back off. You can do this as many times as you like as long as the note(s) sustain. Wah-wah-wah-wah-wah…