JW!Altertale OST - Chill.

"welcome to the snowy sanctuary. a great place to... 'chill out.'"
"IT'S THE 'COOLEST' TOWN UNTIL THE FROZEN FORTRESS!"
This is the replacement for "Home"... I guess.
Or "We're Not Feeling Blue".
Or whatever.
It plays in the settlement at the end of the first area.
I always found the Altertale set of swaps to be interesting, and am disappointed at how poorly they're executed in the original AU.
Swaps:
The Ruins with Snowdin.
Specifically, Snowdin Town replaces the Toriel home area and the city of Home, and the area is now called the Snowy Sanctuary. Though the settlement is a lot smaller, somewhere between in-game Snowdin Town and the Honeydew Resort area in size, in order to make way for Hometown further along in the story.
Papyrus with Asgore.
Sans with Toriel.
Leitmotifs:
Snowdin Town (Bridge, bass)
Snowy
Hopes and Dreams (ending)
This is not Undertale Last Breath Megalovania, nor is it an Enigmatic Encounter Piano Tutorial or a Star and Planet Size Comparison. It is an Altertale AU, which is an AU like Underswap, Storyshift.