Well, Katy Perry, Justin Beiber, et al don't usualy write their own music and lyrics (Katy used to). Their producers hire writers and studio musicians to create radio friendly, trendy music aimed primarily at white, suburban kids. Since most metal bands actually write their own music and lyrics, their songs are about subjects the bands are into
![Ｅｃｈｏ ｏｆ Ｔｏｍｏｒｒｏｗ 衛ピ医 [Ｉｍ ｂａｃｋ ｆｏｒｅｖｅｒ] Sunset Wallpaper, Nature Wallpaper, Wallpaper Backgrounds, Cute Wallpapers, Iphone Wallpaper, Beautiful Sky, Photo Wall Collage, Picture Wall](https://i.pinimg.com/236x/33/28/87/332887c09ab17b64337f307b3748347e.jpg)
