Daniel Johnston used to record his stuff in his parent's basement using just a two channels tape recorder - i think - and a keyboard. His mother had difficulties to understand his artistic aspirations. One of these times Daniel recorded her and over it played a musical theme. Here is the result:
The cover art is from him too. I think Daniel proves that in art the idea/concept is more powerful than anything and in the right context becomes genial. He is one of those artists who walks in that thin line between being ridiculous or genius.