Split & Splat

Split & Splat is a song by Chirpy Chips.

Description
Split & Splat was one of four songs added in the August Update. Like all battle songs, it has a random chance of being played during online matches. It can also be heard in Squid Beatz, and is included in Splatune.

In Splatoon 2, Split & Splat can be unlocked to listen in Squid Beatz 2 as a final reward from the amiibo with a maximum score of 147 and 226 in Normal and Hard modes, respectively. It cannot, however, be heard anywhere else in the base game.

Split & Splat (Stay Fresh Trailer)
The song was first heard in the Stay Fresh Trailer for the August Update. Near the beginning of the song, it moved one of the sections forward, leading to a longer instrumental opening, with vocals only coming in at around 25 seconds.

Trivia

 * A behind the scenes video was released showing the recording of Split & Splat. However, the video itself uses the final recording instead of the raw performance. In the video, the track was called Split and Splat, possibly a beta name.
 * In April 2016, Split & Splat was added to Daigasso! Band Brothers P.