// what sound actually is
Air, doing the wave
Every sound is air molecules bumping into each other in a ripple, from the source to your eardrum. How many times per second the ripple repeats is its frequency, measured in hertz (Hz), and your brain hears it as pitch.
The A above middle C is tuned to 440 Hz: the air in front of your ear wobbles 440 times every second. Double it to 880 Hz and you get the same note, an octave higher. Your brain hears "same, but higher" from a simple 2:1 ratio. That's the first hint that music is secretly maths you can feel.
// the actual magic
Music as communication
Language tells you what someone feels. Music makes you feel it. A song can bottle a summer, a breakup, or a whole decade, then uncork it years later the moment it shuffles back on.
Your brain treats music like a guessing game. It constantly predicts what comes next, and releases a little dopamine when it's right, or when it's surprised in a good way. That's why the drop hits, why a key change gives you chills, and why a song you hated on first listen becomes your favourite by the tenth.
I'll listen to almost anything, but violin and piano are where I always end up: one that sings and one that speaks, both able to say things words can't.
// what i'm listening to