Oops... Forgot to post the link to the video. The quality is shitty... but oh well... The song is Maggot Brain...
http://www.youtube.com/watch?v=KXq4GlHgROQ&feature=related
Maggot Brain is perhaps the definitive musical statement by Funkadelic, and the ten-minute guitar solo is Eddie Hazel's defining moment, and the one piece of music for which he has remained a legend. Perhaps apocryphally, George Clinton told Hazel, during the recording session, to "play like your momma just died" and the result was the epic sounds of Hazel's guitar. The term, "Maggot Brain," refers both to Hazel's incredible intake of various drugs, as well as a mode of thinking which allows one to rise above the "bullshit" of the world, which is inhabited by maggots who have not yet achieved the status of Maggot Brain.