Alright so Fresh wants them to "Sing a long bruh"

Dancetale Sans is singing
Underswap Sans is forcing Fell to Sing

Classic Sans is napping

Horrortale Sans is eating

Outertale Sans is drunk
(Oh Boy.-.)
Aftertale Sans is probably talking to him to stop drinking

Error is wandering what the heck they are doing

Inky is just dropping by

Gaster is talking to somebody