Notes on Quantum Soundscapes and Music

We describe our investigations involving the sonification of data from experiments involving various mesoscopic mechanical oscillator systems cooled to close to their quantum ground states, as well as the sonification of measured data from a single qubit subject to various unitary rotations designed to test the Leggett-Garg inequality. "Listening" to data via their resulting sonifications facilitates the discovery of signals that might otherwise be hard to detect in common graphic (i.e., visual) representations, and for the qubit experiment provides a complementary way to discern when the data violates macroscopic realism with some prior listening training. The resulting soundscapes and music also provide a complementary window into the quantum realm that is accessible to non-experts with open ears.