Trying to explain…if you were to pick a single song that would be capable of putting you / your partner in a great mood immediately while you were having a crushing fight…right or wrong…or let’s say you’re having a terrible relationship argument, and you can pick a song to shut it down…
…anyway, my choice is Louis Armstrong Skokiaan.
I say Breaking Up Is Hard To Do. YAH trust niver trust bro. screw your compiuter friends, I made a virus for your internet morons, mr microsoft
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Led Zeppelin Thank you.
Oh yeah fuck off feels like fuck
And how does that make you feel?
Or… This one.
My wife gets too “in the zone” to be distracted by a mere song. 
This one of course.
*There’s one thing you gotta do
To make me still want you *
It’s a cliche, but this onereally works. It helps that my wife is a huge Ella Fitzgerald fan.
Especially if you manage to play it from a PA system:
“I like big butts and I cannot lie”
I just heard this the other day, but I think it would shut down an argument pretty quick:
The Gummy Bear song.
“My baby loves me just the way that i am”
In the middle of a fight I’d prefer to defuse, I’m liable to starting singing “Kumbaya.”
(Can’t help it, I went to too many folk Masses as a kid in the Sixties.)
My family has two, both courtesy of our father. He would sing the 1970s Burger King jingle "Have it your way… " or, alternately and to the tune of Auld Lang Syne,
“I hate like hell
to doubt your word
but it sounds
like bullshit to me…”
repeat ad infinitum.
I was at a minor-league hocky game once and a fight between to players broke out. They put a picture of Barney, the goofy purple dinosaur on the large screen, and played his song:
♪"I love you…you love me…♫
Even the guys on the ice were laughing so hard they skated away from each other.
Very effective.
Happy Hour by the Housemartins. It’s just so upbeat you can’t possibly be in a bad mood while it’s playing.
This actually happened, sort of, when I accused my then boyfriend of ogling another much prettier girl. He started singing “You Got What It Takes” - you know the song, ‘you don’t dress in the best of taste, nature didn’t give you such a beautiful face, but baaayyybeeee, you got what it takes! To SATISFY!’ I had to laugh, I could have been all offended and gone all girly-weepy, but we really loved each other a lot. And the girl he ogled, compared to plain old me, was so far out of my league she could have been a different species.
Red Hot Chili Peppers: “If you have to ask, you’ll never know…”