Another awesome video from the Exploratorium.
This one, 20 minutes long, is best watched when you are in the mood to sit back and experience a tranquil state, appreciating the beauty of the salt ponds we so frequently fly over near Moffett Field.
As to the background music...
"The music you hear was created first by digitally 'resonating' the recordings of the Airship Eureka's engines and propellers. Naturally louder frequencies were then tuned to a chord. Next the sound was reverberated to remove most of the original track. What you hear is an auditory 'ghost image' of the original sound recording. The music was created by Wayne Grim."I'd say that is pretty cool.