Abstract: An audio speaker device is disclosed. The audio speaker is configured for temporary, secure placement directly upon an epidermis surface of a living body. The audio speaker has an output side facing toward the living body. The audio speaker is configured for connectivity to an audio signal source. The audio speaker is configured to communicate an audio signal from the audio signal source to the epidermis surface of the living body in order to transmit the audio signal to within the living body. In at least one embodiment, the audio speaker device is a prenatal audio apparatus for the acoustic stimulation of an unborn child.