Nicholas the Musical is a The Madi Shinx Show segment that began airing in season six. In each eleven-minute segment, Nicholas imagines himself in different musical situations, from De-Aging to President, and from Iguana to Pizza. Joining Nicholas in his adventures is Mouse, who talks unlike in the regular episodes, Shambert the sheep, and some other characters that appear in regular episodes.
The segments were parodied in a Smiley's Land episode, Smiley the Musical.