You reminded me. I had this girlfriend once. We were staying in her wealthy parents' house when they were out.
When we weren't fucking on the carpeted staircase we looked at her parents' LP collection and decided that their fuck music was most likely the first movement of Tchaikovsky's piano concerto #1, the melody of which became the melody for the song "Tonight We Love" by Freddy Martin, Ray Austin, and Bobby Worth. https://youtu.be/2jY4RcQO2aQ