Actually, a wand of Electric Jolt would do it. Just takes a bard with a flair for the magical and whimsical to notice that the more power goes into a shock, the higher the frequency of the zap.
![Smiley :)](https://forums.layonara.com/Smileys/default/smiley.gif)
And the higher the note.
What do you think the Perform/Listen/LORE/INT check should be to notice that?
Edit: By the way. I do weep with joy.