Please fill-up the information you would like to be on your BAA artist’s page.
As you can see, most of the form fields are optional.
About of length of text on your artist’s page:
Yoast SEO’s content analysis checks the text length of your post. We advise writing more than 300 words for regular posts or pages, while product descriptions should be over 200 words. Why is that? A higher word count helps Google better understand what your text is about. And, generally speaking, Google tends to rank longer articles higher. Hold your horses, though; we don’t advise just adding content for the sake of it. Nobody wants to read poorly written, lengthy articles. Quality and user-friendliness still come first!