A finished single-narrator audiobook is a lot of work sitting on a shelf. The narrator has already found the book's voice: the pacing, the jokes, the quiet chapter at the end. Then the market moves. Publishers are now releasing full-cast editions of books that already have an audio edition, and the usual way to get there is to cast actors and record the book again.
Narrator to full cast takes the recording you already have and gives every character in it a voice of their own. The narration stays exactly as performed. Nothing is recast and nothing is re-recorded.
It is the newest of Midsummerr's Pro services, built for production houses, freelance narrators and authors who recorded their own book. No other audiobook platform we have checked turns a narrator's recording into a full cast.
What changes, and what doesn't
The narrator's own lines don't change. Their narration, and any character who is the teller of the story, stays the recording you made, take for take.
Every other speaking character is voiced separately. For each character you choose how:
- From narrator (the default): the character's lines are made from the narrator's own reading of them, in that character's voice. The timing and delivery the narrator gave the line carry over, so the scene still plays the way it was performed.
- AI voice: the character's lines are spoken fresh by the character's AI voice. Useful for a character the narrator played as a sketch, or one you want to sound clearly apart from the rest.
You can mix the two in one book: the leads from the narrator's reading, a handful of minor characters by AI voice. The Voices page shows the count as you go, so you always know how much of the book is the narrator's performance.
That answers the most common complaint about full-cast productions, that they lose the narrator and turn into audio drama. Here the narrator is the spine of the edition, and the cast fills in around them. If you are weighing the two formats in general, full cast vs single narrator covers the trade-offs.
Ready to try it on your own book?
Start with 5,000words free →How an order runs
The order lives in the same book layout every Midsummerr production uses, in four steps.
| Step | What you do | What you get |
|---|---|---|
| Book | Upload the manuscript, title and language | Every line assigned to the character who speaks it |
| Voices | Listen to each character and set From narrator or AI voice | A cast you have heard before anything is generated |
| Narration | Drop the narrator's recording on each chapter, or the whole book's files at once | Each file matched to its chapter |
| Generate | Generate a chapter | The full-cast chapter, ready to review in the studio |
The manuscript is what tells us who speaks each line, which is why the order starts with it rather than with the audio. Generate becomes available on a chapter once its narration is there, so you can work through a book a chapter at a time as recordings come in from the booth.
When the recording and the text disagree
Narrators improvise, correct a typo on the fly, skip a line or read one twice. A full-cast edition has to know which words belong to which character, so after a chapter is generated, the studio's Recording panel lists every place the recording and the manuscript don't line up:
- a line that wasn't found in the recording;
- a line where the text and the audio differ;
- something heard in the recording with no line behind it.
Each item comes with a choice. Add audio for a missing line, have it voiced, or edit the text and place it again; for a mismatch, use what the narrator actually said or keep the line as placed; for an unscripted read, add it as a new line, leave it, or cut it out. Nothing is silently patched; you decide every one.
Martin, the audio director built into the studio, works as your recording assistant on these projects. Ask it to show what's missing from the recording or explain a mismatch, or have it correct a speaker assignment or add a longer pause. The recording supplies the words and the delivery; Martin helps you get the cast around it right. Direct your audiobook by talking to it shows how working with Martin feels, and features has the rest of the studio.
Music and sound effects, when you want them
The order is speech only by default. When you want a score and sound effects mixed into every chapter, unlock Music & SFX on the Sound Guide step. The price shows before you confirm, finished chapters are regenerated to add it, and once added it stays on the title.
Who it is for
- Production houses with single-narrator titles on the backlist that could sell again as a full-cast edition.
- Freelance narrators who want to offer authors a full-cast edition alongside their own narration.
- Authors who recorded their own book and want it to sound like a production, without hiring a cast.
If the narrator isn't you, agree it with them in writing before you upload, the same way you would agree any other use of their performance. Delivered files carry machine-readable AI marks that say the audio contains AI-generated elements, which is the honest description of an edition built around a human narrator.
Price and languages
Narrator to full cast costs $10 per 1,000 words. There is no title minimum and nothing is paid up front: generate one chapter, listen to it, and pay per chapter as you go. It runs in English and Hebrew for now.
To start, open Pro services from your account menu and choose Narrator to full cast, or see Pro services for the rest of what we make for production teams.
FAQ
Does the narrator's performance change?
No. The narration and the narrator's own character stay exactly as recorded. Only the other characters' lines get their own voices.
Do I need a separate recording for each character?
No. One narrator's recording of the book is enough. If you have a separately recorded cast instead, Cast assembly, another Pro service, places one recording per character.
Can I hear the voices before I pay?
You hear each character's voice on the Voices page before anything is generated, and you can generate a single chapter before committing to the book.
Which languages are supported?
English and Hebrew. Other languages are available for Midsummerr's regular productions but not yet for Narrator to full cast.
