- The correct title of this article is #1 progress. The substitution of the # symbol with the "fullwidth" ＃ symbol is due to technical restrictions.
#1 progress features a lot of drum beats at the start before vocals come in. There are two sets of vocals which are repeated twice before a new section of instrumental starts. In the instrumental, the same drum beats which are heard at the start and during the vocals continue to be played. A heavy synthesis bass plays the main melody in the instrumental. A few sound effects which are slightly inaudible are also played before the song repeats. The song can only be heard in the Octo Expansion, and is heard in stations Roll Out Station, Bust 'n' Move Station, Squee-G Funk Station, Iceman Station, Slap Bracelet Station and All Eyez Station.
The word progress could be linked to the number 1, as the tracks progress and their numbers increase.