I’m not sure it’s menacing… it’s a bit strange to start with but I think it’s about reconnecting.
The kids haven’t felt very close to dad, he’s felt drowned in banal family life. The music reminds him of his clubbing days, but then he sees his son, he remembers his sons life and he realises he’s right where he wants to be and that their childhood was his high days not the clubs.
It’s bittersweet I think. But not very festive 😂