UnScramble this Word: l h a s t e a a?

Questions

Later Years Beatles: A special area in Central Park is named after this song in memory of John?

Later Years Beatles: Despite popular belief, John claims this song isnt about LSD (Sure....)?

Later Years Beatles: Finish the line: "Friday night arrives without a suitcase...."?

Later Years Beatles: Joe Cocker performed this Beatles tune at Woodstock?

Later Years Beatles: John claimed this person was actually the walrus in "Glass Onion"?