Change In Target Audience

Initially I wanted my target audience to be 'young boys and girls/teenagers (aged 11-15) who are into pop music'. Then I realised that this audience was too specific so I have decided to widen it. I now want my target audience to be both males and females aged from 13 - 20 (mostly teenagers). 

I know want the 'townies' tribe (from UK tribes) to be my main target audience because by the time they are 20, they hopefully will have found their favorite genre. With chart music there is a mixture of different genres, however genres with niche audiences i.e. heavy metal, generally don't make it into the charts because there isn't enough support.

 I am also changing the genre of my magazine to be a chart magazine, however it will still include the pop genre of music. This would make my magazine more similar to 'Smash Hits' which is known for 'squeezing stars' juicy bits'. It has content of good/popular music as well as celebrity gossip. There is a mixture of both music and private affairs from the celebrity endorser during their interview/article. 

Chart music is the most popular music genre, artists today include Justin Bieber, Nicki Minaj and Swedish House Mafia. These are the top 16 songs out of the top 40 (according to the BBC) from the 11th November 2012 count: