Everyone likes hearing a great musical track in ads, and we know music can profoundly affect us, whether you’re the type who gets weepy at a classical performance or jumps into the mosh pit. But what exactly is going on in our brains when that happens? Let us break it down, from the ear to the brain, with this infographic. It also includes some interesting notes about the correlation between brainwaves and emotions. Low beta waves, for example, are associated with concentration and alertness, while alpha waves are associated with relaxation and daydreams.