What guitar song did Keith Richards play in oirates of the Caribbean at worlds end?

In the extras of the move, he says blah blah blah plays a unique version of spanish lady (or spanish ladies) --i cant really make out which he says. I then looked up those songs and couldn't find it. IMDB.com credits the song as an orignal written by Keith called Only Found Out Yesterday. I also can not find this song. Hope this helps