The engine bay looks more like a musical instrument than an engine. Maybe the engine sound is music to the ear.
http://www.ebay.com/itm/BMW-Other-S...4943&clkid=6730917881385511792&_qi=RTM1562569
http://www.ebay.com/itm/BMW-Other-S...4943&clkid=6730917881385511792&_qi=RTM1562569