Have you played with Microsoft Songsmith yet? If not, here's what it does: sing into mic and Songsmith magically creates an accompaniment.

Does it work? Well, yes. Mostly. And when it doesn't, the blame can't be placed entirely on Songsmith.

Take the following YouTube clip, for example. Black metal - in this case, Naglfar's The Brimstone Gate - probably isn't the best choice for an Idol audition, but it does provide a glorious opportunity for some fun. The same audition with a jaunty island beat behind it? Pure gold.