The audio titled "Hmm, Oh Hey?" starts with a moment of contemplation, indicated by a drawn-out "Hmm" sound. It's a non-verbal communication, presumably uttered by a human, expressing thoughtfulness or uncertainty. This is followed by a sudden recognition or realization, suggested by the phrase, "Oh Hey?". The speaker's tone suggests surprise, possibly upon seeing or remembering something or someone unexpectedly. The audio piece overall is a simple yet intriguing representation of human expressions and emotions without the use of coherent speech.