Actually all music that sells is commercial, but Im assuming that you mean music that is created only to sell and not for the songwriters personal satisfaction. And it also annoys me that 90% of the songs are about love and the remaining 10% is about skateboards. Lovesongs still are good though, but hearing it 24/7 is like putting vaseline on a sandwhich, its just too much. The fact that some artist goes away with the songwriters fame doesnt disturb me much since many of the artists has wonderful and unique voices for instance Mariah Carey, but may not be such good songwriters. I think its good that songwriters are there to bring out the artists so we can enjoy their talents.