SashiMori

“	SashiMori are part of the rising tide of new bands emerging in this post Inklings vs. Octolings world we find ourselves in. They were originally a wall-of-sound style hard rock band, but decided to ditch their domineering singer. Now, the remaining three members—a carp, a cutlassfish, and a scaly-foot—have recruited a 10 year old Octoling DJ (a true genius on the wheels of steel), to form a new band with a new sound, for a new generation.	”
— Live from the Squid Research Lab

SashiMori is a band whose music will be featured in Version 4.1.0 of Splatoon 2. ^[1]^[2]

Songs

Chopscrewey^(NA/EU/OC)^[a], or チャンポン・チャント (Champon Chant)^(JP)^[b]
Entropical^(NA/EU/OC)^[a], or エントロピカル^(JP)^[b] — (used in the Nintendo Direct trailer for Version 4.0.0)

The band doesn't have any vocalist, instead sampling from various interconnected voice clips said to come from ancient records.^[3] It is said thay these vocals are different from any sea creature, implying that these may be human voices.^[4]