After Michael lets Kevin, Wayne, and Jack in the house to pick up Karen's belongings, there is a vinyl record of "With a Little Help from My Friends" by Joe Cocker in the middle of the messy living room.
At the very beginning, older Kevin talks about the time his dad got stuck on the highway in a blizzard. However, it doesn't snow in Southern California, and It's another indication that the show is set in Eastern US.
The title is a 1933 song written by Harold Arlen and Ted Koehler.