But nobody told me what was happening in the room before I walked into it. I saw nothing but a URL, or maybe I saw some text obliquely indicating what might be

But nobody told me what was happening in the room before I walked into it. I saw nothing but a URL, or maybe I saw some text obliquely indicating what might be happening in there. I certainly didn't see the text of a contract before I walked in. If I walk in, not knowing anything, how can I have signed a contract? Similarly, if I have no binding contract, it certainly can't be required of me to observe or respond to everything within the room. There is no origin for the musician's claimed right to oblige me to any commercial action.