I finally did one using the app. I like the particles and colours. Very mesmerizing!
I only found the app after buying a Rasp Pi, LCD screen, LED strips, alum holders and a 5v power supply.
I suppose I might do up the hardware if there is another long lockdown. Meanwhile, here's my video!
I did a second one using a Yamaha CSP150 instead. Much better midi output recording than the first.
nice