I'm not a big fan of their type of music at all, but if I had to guess, it would be Pop/Teen Pop.
Sleeping with Sirens' music has variously been described as punk, post hard core, screamo, and pop rock.
She was a beautiful, stylish Mexican singer who thrived in a genre of music dominated by men. She was very humble and her death was very tragic which also made people become very curious and interested in who she was which expanded her fan base which was already worldwide.
Because he is a music fan
The band Enuff Z'nuff is often categorized in the genre of glam rock. They are still an active performing band and have a very strong fan base. Enuff Z'nuff originates from Illinois.
According to various sources I've researched. Hip Hop has the Largest Fan Base within the United States.
cowboys
The English club Manchester united has the largest fan base in the world, Real Madrid comes second.
Washington Redskins seems to have a large female fan base.
bulls
The Cowboys
DBSK
Chicago Fire
chivas
Liverpool
david backham
Pittsburgh Steelers