and here is a cool song generator. the longer you listen to more cohesive it sounds, pretty nice for coming up with melodies when you have writers block. the notes are very easy to change with the pitch quantizers.

*this* one is something I use all the time, but it's not terribly complicated. just a nice low bass with a cool timbre.

this one is for making chaotic background noise, something I need a lot of for soundscape-building. It can also make some these really cool foghorn noises sometimes but mostly it's just textures.

this one is for making loud leads. think electric guitar, supersaws, etc. click a button and it makes a nice sound for you. pretty wide range of things can come out of this one.