Halcyon – JJD Roblox Id 402480359 Vote Up +2 Vote Down -0You already voted! This is the music code for Halcyon by JJDand the song id is as mentioned above.Please give it a thumbs up if it worked for you and a thumbs down if its not working so that we can see if they have taken it down due to copyright issues. Tags: Halcyon - JJD Roblox Id