This album was praised for being a breakthrough into new musical areas. Harrison was experimenting with more indian music, backword recorded guitar phrases, and the use of other studio effects.
Some people say that since Paul is the only Beatle not facing forward, that it means that he is not 'one of them' anymore.
'TAXMAN'
"If you drive a car *Paul*" Reinforces the fact that Paul died in a car accident.
"If you get too cold *Paul*" A reference to the state of a body after death.
"My advice to those who die - Taxman" Think of 'Taxman' as a Taxadermist - one who preserves the remains of the dead.
'YELLOW SUBMARINE'
"...sky of blue, sea of green in our yellow submarine" The yellow submarine represents a coffin, buried beneath a sea of green which represents the grass.
"... in the land of submarines" In a cemetary - in the land of coffins.
'GO TO GET YOU INTO MY LIFE'
"I took a ride, I didn't know what I would find there" Another reference to a car ride.
"...and then suddenly I see you" Once you read the Sgt. Pepper clues you will realize that he saw Lovely Rita.
'TOMORROW NEVER KNOWS'
"*Paul* played the game existance to the end" Life is the 'game of existance' and when you die the game ends.
The song title is taken from the 'Tibetan Book of the Dead.'
Reinforces the fact that Paul died in a car accident.