Instructions:

1. To pluck a harp string, click on the button below that harp string. You will hear a musical note and see the sound wave pattern for that note.

2. Try to find a tone that matches the tone of the harp string. Use the slider on the right to change the pitch of the test tone. You will hear a tone and see the sound wave pattern for that tone.

3. To find the pitch of another harp string, click on the button below that harp string.

4. To try a different harp, click on one of the other harps at the bottom of the screen.