In this entry from Marina's Dev Log the large window is inspired by the Logic Pro UI (Omnisphere is also opened below)
Lore-wise though those programs would obviously not be the actual software humans made but different ones that happen to look and work like them as a reference
Big Man just strikes me as an Ableton user, and I went with FL for Acht for variety but I could also see them use Ableton.
I'd imagine the Squid Sisters producer to be more traditionally trained so I'd see her use a more industry standard software in a larger, established studio setting
Here's my head canon for what music software the producers in the Splatoon world would use
Marina: Logic Pro (actually canon)
Big Man: Ableton Live
Dedf1sh: FL Studio
Shy-Ho-Shy (Squid Sisters producer): Pro Tools
made more of them
funnily enough, Ribbit immediately got a crush on Ragatha, this is innovative shipping
I just bought my first Switch 2 Pro Controller, which means the Splatoon Raiders Edition Pro Con will be announced within the next day, you can thank me later
Me when I have a huge fear of big round white dogs:
Between the Raiders Direct announcement, the new Xenoblade AND DELTARUNE CHAPTER 5 SOON I'm pretty satisfied with this Direct
During testing, everything went fine, but seconds after closing the side panel the PC crashed. I removed the side panel again and it's been working for a day