While movies and other categories of (primarily) non-musical programming dominate what we hear and see in our home theaters, it's a good bet that if you've been into this hobby for more than a few years it all began with music. And even now music is often in heavy rotation on our systems. But as I've noted before, there's more to music than simply listening to it with no images involved apart from those in our head. But music is often sung by one or more singers who might also have written it, though not always.