The exact origin of this ride jingle is not documented, but the are you ready lets go call follows a long tradition of fairground and arcade start cues designed to get a crowd's attention in seconds. Short jingles like this spread on soundboards and in short form video because they are instantly understood without context. Editors reuse it as a universal go signal for rides, races and challenges, where the familiar hype phrasing does the setup work and lets the following clip deliver the payoff.