Happy? – Mudvayne Roblox Id 3153417321 Vote Up +6 Vote Down -0You already voted! This is the music code for Happy? by Mudvayne and 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: Happy? - Mudvayne Roblox Id