While My Guitar Gently Weeps is a song written by George Harrison, first recorded by the Beatles in 1968 for their eponymous double album (also known as The White Album). The song features lead guitar by Eric Clapton, although he was not formally credited on the album.
Inspiration for the song came to Harrison when reading the I Ching, which, as Harrison put it, "seemed to me to be based on the Eastern concept that everything is relative to everything else… opposed to the Western view that things are merely coincidental."
Taking this idea of relativism to his parents’ home in northern England, Harrison committed to write a song based on the first words he saw upon opening a random book. Those words were “gently weeps”, and he immediately began the song.
more :http://en.wikipedia.org/wiki/While_My_Guitar_Gently_Weeps