A well-written biography will allow your story and identity as an artist to be shared in order to draw people in to your individuality and your music. A biography is something you always need to have on hand as an artist or musician. You often need to hand over a professional piece about you when being interviewed for articles/magazines, auditioning to play a venue, for music streaming "about" sections, or just for personal promotion on social media. Without a biography, you have no background to share on who you are and what your story is with the world-- when you should be standing out and sparking the interest of listeners and readers.