Fun idea, but they'd probably still be too young at this point to be really big on the scene if at all. And yes, I am aware that there a few bands that started rather early, but I don't think it's that common, nor exactly smart (a lot of the youngin's can't handle fame well, I know wouldn't be able to).
But supposing such a child did exist, what kind of musical talent are we talking here? Like they just naturally have a good singing voice, or like those two asian kids (whose names I forget) that started playing before reaching even a first birthday.
Or some sort of middle ground?
For some reason I feel like Jackson Jr. would be into pop punk music.