This has been driving me insane

[Friend of P 6]

I have googled every possible thing I could to try to figure this out. This happened either on comedy bang bang podcast or improv4humans. There was a musical guest on one of those podcasts where they performed a song that him and his wife/girl friend wrote about their perspective of breaking up with each other. I keep hearing snippets of it in my head but I can’t remember who performed it or where to find it. Please help.