Ohh, I wondered what you were doing when you went AFK for like half an hour.
This is a pretty cool creation, I had made a smaller version of this (and then gave up on doing anything with it xD) but Blob went above and beyond and made a full-blown music creator. And yes, there is a problem of the color set, since I have a custom one, but I can always send the said server hoster my ColorSet.txt.
Edits:
Oh, by the way Blob, you said the stop button was black, but you painted it Rainbow. :)
You also forgot to mention the background music system. It plays a beat while your custom tune is playing. (To the screenshot viewers, I think he made that system on the table on the right-hand side of the screenshot that's cut off. He might've removed it due to some glitch I don't know about, so don't take me up on my word for him still having one there.)