Seriously- what you see isn't always a "persona" Amy Winehouse for example was exactly what she portrayed. I don't care enough about Ke$ha to find out if that is the case withher or not- I think she is talentless and turn her off whenever she comes on the radio- what I HAVE had to listen to is because of my teenager....
WHAT exactly did Amy Winehouse 'portray?' Get your teen some earbuds, for heaven's sake. The grownups own the outloud music in my house. Kids can be seen but not heard, lol! (They actually prefer it)