The phrase "art about to" can be replaced with a number of synonyms, depending on the context. For example, if we are discussing an artist who is on the verge of creating something new, we might use words like "eager" or "preparing." If we are describing a work of art that is just beginning to come to life, we might say it is "emerging" or "forming." In general, words like "imminent," "impending," and "forthcoming" can all be used to suggest that something is about to happen. Ultimately, the choice of synonym will depend on the specific situation and the speaker's intended meaning.