Imagine being up in space, then waking up to the sound of "Good Day Sunshine" and Paul saying, "Good morning, guys! Wake up! And good luck on this, your last mission. Well done."
NASA has a long tradition of waking up astronauts in orbit with special wakeup music, usually picked for individual crewmembers by a loved one or friend.
Paul McCartney and Beatles favorite "Good Day Sunshine" greet the Atlantis crew of Chris Ferguson, Doug Hurley, Sandy Magnus and Rex Walheim first thing on Flight Day 8.