For those asking how this is different than other non-tracker DAWs, the answer is basically "this is a tracker".

For those not familiar, trackers are a type of music composition software that's been around in one form or another since maybe the mid-80s. [1]

Used very heavily in the demoscene, chiptune, and adjacent parts of game development scenes.

The power of trackers is in the workflow, which provides an incredibly fast interface for writing music compare to other interfaces like piano rolls, staves and notes, multi-track DAWs and so forth. They take a bit to get to used to, but allow you to compose basically as fast as you can type notes. This speeds up iteration in testing musical ideas substantially. The interface concept also lends itself to a very compact representation of multiple tracks allowing a composer to see what's happening elsewhere in their composition.

It can feel a lot like programming in many ways, and like you are working a level "below" almost all other composition software and closer to the music and instruments.

The format lends itself very well to compositions in 4/4 time, but most tracker software lets you change the time signature, tempo, and other things so that very complex compositions with weird rhythmic patterns are not too hard to pull off.

There are dedicated tracker software for all kinds of musical workflows: sample-based, chiptune, NES, MIDI, VST, modular synths, etc. and tracker software exists on pretty much every platform and targeting nearly every output audio device you could possibly imagine.

There are literally millions of tracked pieces of music in the world, covering an innumerable number of genres.

Best of all, most tracking software is free, or incredibly cheap, well documented with videos showing you how to do things and thousands to hundreds of thousands of examples you can open to see how a particular musician accomplished something.

1 - https://en.wikipedia.org/wiki/Music_tracker

2 - Here's a tracker I particularly like who works in a lot of styles, especially tracks "Living, again and again" (both mixes), "Accidental Ray of Sun (Piano Mix)", "Aurielis (lf box mix)", and "Transitory"

https://soundcloud.com/elblanco5

According to a comment, he did most of this in a tracker called "Impulse Tracker" which is now replicated for modern systems as "Schism Tracker" - a completely sample based tool.