I did some whistling and effected the speed, pitch, and filters in a few ways
Distorted pitched down metal reverberation with tape manipulation induced wowing recorded on 1/4" tape and physically looped
A synthesized wow sound - with filter and sweep processing.
A female voice saying 'wow'
"wow" in a high pitched voice.
Squirrel monkeys calling and moving around in their indoor exhibit. Spider monkey screaming in the background. Recorded with a Zoom ...
Growly male voice saying "Monkey".
One monkey screaming to another one. Recorded at Jaipur (Rajasthan, India), at the Galta hill (known as Monkey Temple).
Accidentally made this... and I like it.