Having become available on bootleg albums from 1991 onwards , Harrison 's 1968 demo was released on the Beatles ' '' Anthology 3 '' compilation in October 1996 . Recorded on an Ampex four-track recorder , the demo features Harrison playing two acoustic guitar parts , and a double-tracked lead vocal . Harrison performed " Piggies " throughout his 1991 Japanese tour with Eric Clapton and at his Natural Law Party concert in London in April 1992 . With synthesizers replicating the classical arrangement , a version recorded at the Tokyo Dome on 15 December 1991 appears on Harrison 's '' Live in Japan '' double album
1991 Japanese tour
George Harrison–Eric Clapton 1991 Japanese Tour
Piggies