Once you come into this world, there are redstone lamps that look like that they activate when a certain music disc is placed inside of a jukebox.

Well, they do, however it does take a while for the redstone lamps to actually show the disc being played as this uses a lot of redstone and a single comparator. I'm pretty sure there is a more efficient and compact way to do that tho...

But still, what do you think of my first large redstone contraption?