Octoweaponry

Octoweaponry is a song performed by Turquoise October.

Description
Octoweaponry, like many Turquoise October songs, is an electronic song, featuring many chiptune influences and Octarian-sounding vocals, such as a repeating "yeah" vocal. It also contains a sound effect partway in that resembles a phone line soon after the thirty second mark. Around the 32-second mark, some orchestral horns and chorus are heard. It plays during the third and final phase of any fight with a Great Octoweapon, in the missions The Mighty Octostomp!, The Dreaded Octonozzle!, The Rampaging Octowhirl! and The Ravenous Octomaw!, and can also be heard in Squid Beatz. It was replaced by Octarmaments as the new boss battle music in Splatoon 2.

See also: Octoweaponry

This is also the version used in Super Smash Bros. Ultimate. It has a chance of playing on Moray Towers, and can also be heard in the Sounds section in the Vault menu.

Octoweaponry (Phase 1)
This is a very sparse version that leaves just the main instrumental with no "yeah" vocals, guitar strumming or some sound effects, for a less intense version of the original. It plays during the first phase of boss fights until the player damages the boss enough and advances to phase 2.

Octoweaponry (Phase 2)
This version is nearly identical to the original, with only the light background guitar strum missing. The horns and choral voices are also missing from the second half. It plays during the second phase of boss fights until the player damages the boss enough and advances to phase 3.

Octoweaponry (Splatune)
In Splatune, a medley of the three versions is included instead. The "Phase 1" version is played until 0:55, when it switches to the "Phase 2" version. This plays until 1:47 when it switches to the standard variant for the rest of the song.

Etymology
Octoweaponry is a portmanteau of "octopus" or "Octarian" and "weaponry", likely referring to the Great Octoweapons.