The document analyzes three radio advertisements - one each for Tesco, Wonga, and Alton Towers. For the Tesco ad, the summary notes that it is concise and focuses on key facts to keep listener attention. The Wonga ad uses a familiar song to engage listeners throughout its longer duration before stating key details at the end. The Alton Towers ad utilizes rollercoaster sound effects and an informal tone to grab attention, though parts are difficult to understand due to background noise.