What is a black parade?

Here's the story, a man who is afraid of life, and afraid to die gets cancer. His life was rather tragic and he sees the memories of his favorite childhood moment one last time before passing on. In the song The End, the patient is waiting in the hospital bed, explaining how he loathes himself, how bad his life was, and unhappy he is, and in the next song DEAD! the doctors explain he has cancer. In the song This Is How I Disappear, he explains he did love a girl once in his life and that she just made his soon coming death even worse. In The Sharpest Lives, the patient explains how his alchoholism ruined his life and sucked everything out of him and in welcome to the black parade he remembers when his father took him to see a marching band. In the song he blacks out and goes into the black parade. In the song I Don't Love you, he once again talks about his girlfriend, but this time in a not so friendly way. In House Of Wolves, the black parade takes him to hell and warns him about his mistakes in life. In Cancer, the patient talks about how his condition is making him weak, then in Mama the patient sees a flashback from the leader of the black parade (Gerard's character). Mama tells the tale of 5 brothers (aka the band) who leave for World War 2. Their mother hates them, they send her letters and she finally replies and says I disown you, the following day they all die and when she finds out she is very sad. (Their mother is the woman with the gasmask.) Sleep is about the patient's fear of sleeping and never waking up, and Teenagers is not about the story at all actually. (Gerard felt it needed to be in the album with all the teenage violence nowadays.) Disenchanted is about the patient sitting at the end of his life, in the hospital bed, saying nothing was ever good, and he officially admits he doesn't want to die. In Famous Last Words, he tells his girlfriend he did love her after all, and he is not afraid of life anymore. The ending is open to interpretation. Some believe that the patient dies, some believe he comes to his senses and actually sees his girlfriend lying in the hospital bed. Gerard says "The more I thought about it, the more I thought maybe this is all in his head, maybe he has a choice to fight now" But if you want the short answer, it is the 3rd studio album by my chem.