Mice, like birds, are natural born singers. From birth, they emit a wide repertoire of vocalizations especially in the ultrasonic range, which are inaudible for humans. They emit ultrasonic vocalizations (or USVs) to form complex patterns to communicate with each other. The amount of calls and sequences of different types of vocalizations are important form of communication. Mouse vocalizations are also used as a model system in research into neuropsychiatric disorders such as autism.