Serendipity stuck when Mariah Carey rediscovered the glitchy Tom Tom Club hook, a sample of which is the heart of this upbeat slice of dance pop. "I had the melody idea for 'Fantasy' and I was listening to the radio and heard 'Genius of Love,' and I hadn't heard it in a long time," Carey said. "It reminded me of growing up and listening to the radio and that feeling the song gave me seemed to go with the melody and basic idea I had for 'Fantasy.' I initially told [co-writer] Dave Hall about the idea, and we did it. We called up the Tom Tom Club and they were really into it."