In light of feedback from tutorial the other day, I agree that the armchair will look odd in the gallery space and people won't want to interact with it. So in the hopes of creating something with more ability to carry the metaphor, I've started thinking about a museum bench. This way it will look 'normal' in the gallery environment so the audience will approach it without expectations.
After talking with Jeremy in 4D he suggested some equipment and I've decided to embed the speakers in the bench so it's a fully self-contained unit and there won't have to be any wires showing (see sketch above). Ordered the Adafruit and wires and stuff - excited to start tests when everything gets here!! Gonna work on finding the type of sounds I want to play and how to build it this week.