Hello people! I was just derping around when I found that BUD (Block Update Detector) Switches could pulse out a signal for the first tick that a jukebox plays! So I connected it to a RS nor latch and then to a piston door.

Note: To close the door, take the disc out of the jukebox BEFORE pressing the reset button.

Additional Notes

If you want to use this anywhere, please give me credit.

BTW I know there are some bugs with the device. I may or may not fix it.

To take the pictures for this project, I used FVDisco's incredible oCd texture pack. Download it here: http://www.planetminecraft.com/texture_pack/ocd-pack/