Inspiring idea for concept tracks/album.

[MetaDronos]

My current inspiration for some sound design which, in turn, will be a basis for some ambient tracks:

http://en.wikipedia.org/wiki/List_of_unexplained_sounds

I plan to process some field recordings, especially created with my contact microphones to get
various flavors of "unexplained sounds".

I have already processed recording of sound of metal bridge taken with contact microphone
by paulstretching it and passing through lowpass filter. Result is something like "song of robotic whale".

[Negative Spectrum]

What a fantastic idea, you'll never run out of inspiration.