The theme song for Sid the Science Kid is sung by Sid and his friends (Gerald, May and Gabriela). In the song, Sid is asked what he wants to learn today, to which he responds that he wants to learn why things happen, and how they happen. And he wants to know everything right now! Am instrumental version of the theme without the vocals is heard over the end credits of the show, and musical cues throughout the show often reprise the theme's melody and rhythms.