Happy Day in ROBLOXia is the most favorited song on the Bloxy Beat website and was the most popular in the early 2000s. It is originally an instrumental song. On April 23, 2008, another variant of the song was made, which shared the same melody, but added lyrics written by Shedletsky. The song also came with a music video titled "Shirts... And Pants Pants Pants Pants" and was uploaded to Bloxtube the same date the song was released.
This song was originally composed by Stealth Pilot (now ScorpioPilot ). Stealth Pilot is one of the Robloxians who took advantage of the law that citizens can have spaces on their legal names before it got repealed.