How to make a singer out of a musically-challenged type

[UPDATE to the paragraph below: In answer to the Q about the general quality of singing at the Kid – it is quite high. Rare is the bird who’ll go to a karaoke event knowing that s/he cannot carry a tune. For him/her, there is now hope.]

I have gone (as a tag-along) to two or three karaoke events organized by the Sociology gang in Madison. I’ve not gone the last couple of times. I did not think I swore off because of the quality of the singing of *some* of the participants. Still, the following article in the WashPost intrigued me. Maybe I should make an anonymous gift of the described device to the person most in need of a vocal boost? At the very least, let me provide a link (carryatune.com) and maybe chance will have it that someone will read about it, invest in it and we will see a new era in karaoke at the Kid. [Karaoke participants: please send emails expressing gratitude to my above address.]