DrawingMapsNR

I was looking at some old YouTube videos when YouTube decided to randomly recommend a video made by crayhk about his evolution simulator. I decide to rewatch it since I remember watching it a few years back when suddenly I remembered a very specific outro I heard around the time I watched their videos. It went like this:

A black screen with I think where letters inside boxes appeared. I think the letters where A, B, C or maybe D and they were arranged in a specific order. After a second they appeared, one of the letter's boxes will would turn white and a small musical note would play. The box when then fade back to it's original state and the next box would turn white and paly a different note. This processes went left to right and played a small medoly how a sequencer in a music program would do it. One it got to the last letter, the letter's would get smaller and be pushed to the edge of the screen where more letters appear and a full song made of the letters would play. The background would no longer be black and instead be multiple colors and some recommended videos would appear.

Now, I thought this outro came from crayhk but for some reason, I can't find a video with that outro. I thought looking through their older videos would lead to me find them but I couldn't. All their videos just kind of end. I swear the channel that had it did something with evolution simulator and that they said something about combining coding and music together. I also remember that the channel name had either the same letters in the first musical segment or just started with the letter C.

I thought the channel name had CDA in it or something but I don't remember and searching it up gave very random videos. Please, I remember like a milliseconnd of how it sounded and desperately want to rehear it.