Hero Mode - Onward!

Onward! is a jingle.

Description
Onward! is a very short jingle, lasting roughly five seconds, taking a lot of elements from Turquoise October songs. It is the signature five-note melody of the Octarians playing twice, the second time with a higher pitch. It is heard during the sequence that plays once the player finishes a mission in Hero Mode.

Onward! (Octo Canyon)
A remix of the jingle was composed for Splatoon 2, where unlike the original where no artist was given, the Splatune 2 booklet lists it as a Turquoise October song. Like the original, it plays after successfully completing a mission in Hero Mode.

Eight-Legged Advance
The intro of Eight-Legged Advance is a version of the Onward! jingle. The "burp" sound effects have a great similarity to the sounds in Onward!

I am Octavio
A choral version of the Onward! jingle plays throughout I am Octavio as a musical motif.

Octarmaments
Octarmaments contains various distortions of the Onward melody.

Bomb Rush Blush (DJ Octavio)
Similar to its final boss theme predecessor, DJ Octavio's remix of Bomb Rush Blush also uses the Onward! motif throughout the track.

Scrapper jingle
Whilst stunning a Scrapper, a jingle is played, consisting of the Onward! theme being played with what appears to be car horns.

Ebb & Flow (Demo)
Similar to DJ Octavio's usage of the jingle, the demo version of Ebb & Flow contains interpolations of the Onward! theme, hinting at Marina's Octarian origins.

Inkopolis Memorial Mixtape
The same choral Onward! jingle that plays in I am Octavio is heard twice in the Inkopolis Memorial Mixtape. The first time, it plays right after Octo Eight-Step, and the second after the Opening jingle by Wet Floor.

Etymology
The name of the song states that the player has just completed a mission and it is time to continue onward.