Hi Linda.
We already have a show that features under 25s over25s and bands (well a group of non player pop singers if you count that as a band) It is called X factor. Simon Cowell, Sharon Osborne and Lou Walsh are the panelists. They do not perform any original songs just sing Karaoke covers just like AI. The sad fact is that most of the mature singers are streets ahead of the under 25s. They tend to get voted off early probably because they are considered to old to be a popstar. AI is the exported to America version of Pop Idol another Simon Cowell show. It is probably only a matter of time till you get X factor or similar.
I doubt if they will want original music however. S Cowell has his reasons.