The neurons that are firing away are ones that are involved in memory or songs and perception for songs. And when they fire, it's as if you heard the song itself. Because when you hear my voice or when you hear a song, you're never hearing the song. You're always hearing what your neurons are interpreting the sound that comes to your ear. Your mind is what your brain does in that sense, and in a very central way.
Watch the full by Prof. John Gabrieli