The party song "Mon Amour" by Lola Reeves

Any clue about the party song when Donald Sutherland is filming Leslie Ann Warren playing with a kid and McNamara come along? It's called Mon Amour, performed by Lola Reeves and has a beautiful sax. I've searched for it everywhere but it's like an apparition.
I asked William McNamara himself but he doesn't have a hint even.

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