Okay, okay ... this one was cruel and unusual! Lots of noble attempts, though.
The sources of the seven clips in the montage:
"It was" -- from "OLD FRIENDS"/"BOOKENDS" by SIMON & GARFUNKEL
"the night" -- from "PAR AVION" by MIKE + THE MECHANICS
"before" -- from "BEFORE THE NEXT TEARDROP FALLS" by FREDDY FENDER
"Christmas" -- from "MERRY CHRISTMAS DARLING" by THE CARPENTERS
"and" -- from "AND WHEN I DIE" by BLOOD, SWEAT, AND TEARS
"all through the" -- from "ALL THROUGH THE NIGHT" by CYNDI LAUPER
"house" -- from "OUR HOUSE" by CROSBY, STILLS, NASH, AND YOUNG
So there!
Congratulations to Dementoid Cole Adams of Glendale, CA, for supplying the most accurate information. Adam wins a copy of the demented song of his choice!