Tip: If you place a moon, midpoint, or dragon coin through Map16, it will always respawn whenever you reenter that sublevel. It will not respawn if you add it through the Add Objects/Extended Objects window.
This song makes me feel like Eliot Ness stumbling on some mobsters' bootlegging operations. It definitely feels like a theme for a group of bad guys, organized criminals, whether you want to call them Koopalings under Bowser or some old-school gangsters. Great song for their hideouts or scheming cutscenes.