<P> According to authors Kevin Ryan and Brian Kehew, and John Winn: </P> <Ul> <Li> John Lennon--double - tracked lead vocals, maracas </Li> <Li> Paul McCartney--harmony vocals, Lowrey organ, bass </Li> <Li> George Harrison--acoustic guitar, tambura, lead guitar </Li> <Li> Ringo Starr--drums </Li> <Li> George Martin--piano </Li> </Ul> <Li> John Lennon--double - tracked lead vocals, maracas </Li> <Li> Paul McCartney--harmony vocals, Lowrey organ, bass </Li>

Who is singing lucy in the sky with diamonds