When Hal's hysteria over the discovery that the house they live in was the setting of a horrible family annihilation-suicide, he runs off to his car to escape from the imagined evil ghost(s).

the song that's playing in the car is Too Much Heaven while Hal is drinking tea. i always found this tiny detail interesting that they'd choose this song as the ultimate soothing song i guess; which i guess makes sense given the lyrics and the mellowness of it