The band themselves dont count as a reliable source though We cannot use primary sources for things such as genres We need to use the opinions of reliable music critics to decide what we include in Wikipedia not the ediotors or the band Yes the bands opinion is worth mentioning although I am not sure if there is something about them denying the term emo specifically for The Black Parade but they ultimately dont decide on Wikipedia what their album sounds like Yes they made it but it is up to the critics to decide for us what the album is classified as regardless of our opinions Whether we believe if this album can be classified as emo having sourced information makes for a better article and a better encyclopedia