Maisy Mouse was created by British author and illustrator Lucy Cousins, first appearing in picture books in the early 1990s before the animated television series arrived in 1999. The show's simple colours, gentle narration and playful music made it a staple for preschool children in the UK and US. As those viewers grew up, clips and the theme tune resurfaced online as nostalgic ringtones and soundboard sounds, shared by parents introducing Maisy to a new generation and by fans remembering the original series.