Aspects of the present disclosure relate to synchronously presenting companion content, such as text content of an electronic book, while recording or presenting narration audio content spoken by a narrator. For example, recorded audio content may be received that corresponds to words of the companion content as spoken by a narrator. The recorded audio content may be received at least substantially in real time as the words are spoken. Content synchronization information for the recorded audio content and the text content may be generated, where the content synchronization information maps portions of the recorded audio content to corresponding portions of the text content. The audio content and the text content may be synchronously presented to a user based at least in part on the content synchronization information.