- The correct title of this article is #9 party. The omission of the # is due to technical restrictions.
Throughout the song, there is a repetitive beat structure. At the beginning, two of the four (three but the first part of the first sound effect is repeated) main 'sound effects' are heard before they are repeated with the other two playing to a beat and tune. This is repeated before we get a slightly different tune with the 'sound effects'. This is repeated with a slightly different ending before we hear a new section with three vocals and a bit of instrumental before the song repeats.
- This song only plays in Deepsea Metro stations where the lines do not overlap.