This was the thinking behind Muzak’s ‘Stimulus Progression’ background music concept [1], I wonder if this is what you’re referring to? Great tunes! [1] https:

This was the thinking behind Muzak’s ‘Stimulus Progression’ background music concept [1], I wonder if this is what you’re referring to? Great tunes! [1] https://youtu.be/AlY3jsxlzVg https://youtu.be/AlY3jsxlzVg