Funkadelic - Maggot Brain

I had a listen to this piece these days. I have to say it's one of the most intense and emotional piece of music I ever heard.
So I wanted to know what you guys think of it.
The guitar player is using some really weird distortion on it. I didn't knew the band before, I just got that one song, who are they actually? :D If someone can tell how's their other stuff.

Great song. I like to go on bike rides in the town forest sometimes, and whenever that song comes on, I kinda get lost and become oblivious to my surroundings. Good stuff. Luckily I'm familiar with the forest, so it's all good.