In it's most technical definition, "unannounced" -- however, this word has deeper meaning to all but the aesthete; that is the attachment a special sort of qualifier, a quality wherein the object of the adjective possesses certain qualities which make it impervious to the scrutiny of the unwashed masses--often such work finds itself beholden to the venue of the "midnight movie" a la Rocky Horror -- let us, for the sake of decency, forgo such treatment for the truly worthy, those pieces whose mastery is so sublime that it escapes even the attention of the vulgar nihilist.