R-2600 Twin Cyclone 14-cylinder air-cooled radial engines, baby. Nothing else in the world sounds like 'em.
You can probably appreciate this link, then. There are two air-worthy and flying B-25s located within a moderate distance of my house. In the summertime with my windows open I can hear that signature sound miles away. I always go outside for a good look.
I've been told that Mr. Allen has now passed the $100 million mark with his fleet of restored vintage aircraft. Nice hobby, if you can afford it.
He can. I still say we call him...