Bach's prelude to his first cello suite is currently being used in the American Express "Smile" campaign, which, by virtue of airing repeatedly during the World Series, is currently my obsession.
I love the architecture of Bach's arpeggios. Technically, they really aren't complicated. But there's an insistent, driving determination that lulls you into this strange meditative trance, only to surprise you with some startling detour.
Math is something I really don't understand, and the mere mention of it gives me a creative sphincter contraction. But somehow, in Bach's hands, music becomes a mathematics of sensuality, of conquering the labyrinth so quickly that you find time to discover your lover playing hide-and-seek from you in the hedges.
I should listen to this when I'm doing my taxes, it'll make it seem sexy.