That strange phenomenon where air molecules bounce against each other in a way that somehow comforts you, makes you cry, or makes you dance all night: music. Since the advent of recorded audio, a musician doesn't even need to be present anymore for this to happen (which makes putting "I will always love you" on repeat a little less awkward).
Sound engineers have found many ways of making music sound good when played from a record. Some of their methods have become industry staples used on every recording released today.
Let's look at what they do and reproduce some of their methods in Ruby!