That’s one of Wm. Gibson’s best observations. To wit: Microsoft releases Songsmith, a fairly clever program that generates accompaniment (albeit banal accompaniment) for your singing. Unfortunately they plug it with a painfully awful advertisement. In response, the street starts abusing the software by running a capella recordings of well-known songs through it and showcases the results on YouTube and elsewhere. The ad and several such examples can be found here and this page has more.
It seems entirely predictable that we’ll soon hear the combined output of Songsmith and Vocaloid.