The descending chromatic line on the bass is what you would do if you had no other idea[1]. Over that is pretty formless song. That it tops a billboard is the m

The descending chromatic line on the bass is what you would do if you had no other idea[1]. Over that is pretty formless song. That it tops a billboard is the most remarkable thing. [1] cf Nora Jones "Don't know why" - though a longer run and better done I feel.