Korg’s Gadget is a suite of synths and drum machines with a user-friendly interface. It is so easy to put them all together into incredible-sounding tunes. The good thing about it is it really gets to the heart of music-making: the fun of it. And best of all, it gives you great results.
There are four windows in the UI: one for your mixer (which shows each Gadget loaded per track), one piano-roll editor, the Gadget up close, and the song/arrangement. What Korg did was to take the most important parts of music-making, streamlined them and made them uncomplicated, so you can create tunes quickly.
Read more about this here: https://www.musictech.net/reviews/digital-audio-workstations/korg-gadget-for-mac-2-5/