Have you wondered what that sound is that the cows make when the moo?  Well look no further because here it is:

That's right folks, it's just a little kazoo.  I figured the sound of the kazoo was a good base for a cow moo but once I pitched down the kazoo a good amount it sounded pretty good!

Using kazoo for the cows gave me a pretty fun idea though: Why not use toy instruments for all of the sound effects in the game?  So I endeavored to use the kazoo as much as I could.  I started with using the kazoo for the alert meter in the game, having a kazoo raise in pitch as the meter increases.  The next attempt of using the kazoo was to make the enemies sound angry and grumbley but it sounded too similar to the cows and got lost in  the mix.  So, the next choice of instrument was...

A slide whistle!  I first tried using the slide whistle for the ufo's movement sound since it sounded pretty similar to the basic sine wave we currently have, but it ended up not sounding to good.  So, the enemies were up next to receive a slide whistle treatment.  If they see you they'll shreak with a slide whistle hit that should cut through all the other sounds and really let the player know they're in vision.

For future sounds I'll try using some tambourines, flutes, and my melodica to really create cohesive and toy-ish soundscape.