We've invented a machine that lets you select your mood. This astounding device can be adjusted to make you feel however you’d like to feel. It’s called a radio.The distinct advantage of humans is our ability to attach complex meanings to sound. The most important sounds are called words.NOTE: The written word has no meaning until it has been translated into the spoken word it represents. How many times have you been lying in bed reading a book when it occurs to you that your eyes have been scanning the same paragraph over and over, but you still have no idea what it says? Falling asleep, your eyes continue to take in the written words, but the visual symbols are no longer being translated into their corresponding sounds. Consequently, no comprehension.Pitch, key, tempo, rhythm, contour and interval are elements of music, another language of sound, to which we attach complex meanings.Control the music and you control the mood of the room.Not even a chimpanzee can clap in rhythm to music. Conscious rhythm is uniquely human, a function of Broca’s area. It makes sense, doesn’t it? That same region of the brain that coordinates diaphragm, larynx, lips and tongue so that we can articulate stored sounds called “words,” also coordinates the muscles that allow us to clap, tap, and dance to a rhythm. Animals can't clap in rhythm for the same reason they can't talk. No Broca's area.Imagine an auditorium of chimpanzees clapping in unison to Elton John’s Bennie and the Jets. Pretty scary, huh?In all its variations – iPod, CD player, etc. – a radio is a mood selection device, a delivery system for the complex sounds that so greatly alter our mood. How do you want to feel right now? Just press the button.Faint traces of music driftTo my ears in the lonely nightWords barely audible yet familiarA little too familiar this timeTaking me back to times and placesI never knew I had left behind.Intending to turn the radio offI only manage to increase the volumeHoping you will somehow hearAnd miraculously returnTo sing each broken phrase with meThese opening lines of Memory Radio by Jenny Leigh were written in non-rhyming meter, also known as free verse. Meter is achieved when words are arranged so that a predictable rhythm is created in their pattern of stressed and unstressed syllables.Iambic meter is soft/hard (x /)“That time of year thou mayst in me behold”Trochaic meter is hard/soft (/ x)“Tell me not in mournful numbers”Spondaic meter is hard/hard (/ /)“Break, break, break/ On thy cold gray stones, O Sea!”Anapestic meter is soft-soft/hard (x x /)“And the sound of a voice that is still”Dactylic meter is hard/soft-soft (/ x x)“This is the forest primeval, the murmuring pines and the hemlock”Meter is magnetic.“Bounty. The quicker picker-upper.”Meter makes slogans sticky.Where do you want to go today? – MicrosoftIt's everywhere you want to be – VISAThe ultimate driving machine. – BMWWhen it absolutely, positively has to be there overnight. – Federal ExpressMeter makes words musical.“Twas the night before Christmas and all through the house not a creature was...