Oobi Music is an online game from Noggin.com. It was the first game ever made for the show. It was available from 2001 until 2009.
The game was made for "Oobi Online", a section of Noggin's website based on the Oobi shorts.
In 2005, a Mandarin Chinese version was made for SMG's website to promote the Chinese dub of Oobi. It featured the same sprites and controls, but Oobi's Mandarin voice actor dubbed over all of the dialogue. This version can still be played on an archive of the original site (here).
"Make music with Oobi! Click the big round musical note button to start the music. Choose and click an instrument button to add a sound to the music."