This is Mallory. She works at the local cafe as the barista, but sometimes she takes the small stage and entertains when customers are scarce. Today is one of those days, with few people coming in and out. Your character has noticed the odd looking, late twenty something year old there before but has never heard her sing.
At the beginning of her fourth album as St. Vincent, Annie Clark is running and sweating and naked and alone. Well, not completely alone. There's a coiled serpent closeby, shaking its tail—hence the running. "Rattlesnake" would be a perfect, panicked creation myth—a shock of metaphor and imagination—except for the fact that the song is based on utter reality.