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. 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.

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.

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