Synthesizer V Studio 2 Launches AI Choir Voice Collection
- Ezra Sandzer-Bell
- Jan 18
- 10 min read
Updated: Jan 20
Dreamtonics, the Japanese music tech company behind Synthesizer V Studio 2 Pro, made a big announcement on January 15th 2026. Their AI singing voice software now supports the creation of polyphonic AI choirs. This update is the result of over two years of research and recording.
All of the human voices used for the AI model were trained with consent. In fact, Dreamtonics hired and recorded full choirs on their own. They used sophisticated machine learning techniques to separate and learn from those voices, resulting in a much more realistic timbre with support for up to 16 voices at once.
Synth V Studio 2 Pro is a standalone app that simulates vocal performance, by combining an advanced MIDI piano roll with a user's lyrics. The three new AI choir voice collections load directly within this standalone application.
For a bit of context here, Dreamtonics published the original Synth V software back in 2018. It took six years of R&D to release version two in March 2025. That tool was focused on solo voice synthesis.
Polyphonic arrangements were technically possible in that 2025 version, but in practice, stacking solo vocal stems was not effective because users didn’t get the vocal realism of a live choir.
To solve this, Dreamtonics had to record full choir ensembles in a studio and use deep learning with spatial signal processing to dissect recordings into individual soloists. This technique helped them capture the timbre of real choirs, while keeping the natural interaction between voices intact.
Dreamtonics shared an NFR copy of the software with me, so that I could test the new AI choir features personally. All opinions in this article are my own.
Table of Contents
Overview of Dreamtonics' new AI choir feature
There are three AI choir voice Collections in Dreamtonics' new release, with support for a total of six languages to choose from; English, Spanish, Japanese, Mandarin, Cantonese, and Korean.
Collection 1 targets gospel, worship, and contemporary backings for pop, R&B, rock, and electronic music. One user on social media asked for a more diverse range of vocal styles (specifically African American worship choirs). This choir collection is super clean, but may be too vanilla for black Gospel and R&B.
Collection 2 focuses on classical, operatic, and cinematic scoring with mezzo-soprano and baritone voices. I found these cinematic voices to be really compelling. It's easy to imagine film and TV composers creating dramatic choir arrangements for their scores with this AI voice model.
Collection 3 emphasizes folk, hymnal, and ceremonial styles. My first impression was that it would be great for adventure film music with a Celtic flavor.
Each collection includes soprano, alto, tenor, and bass parts. You can scale up from a solo singer to a 16-member ensemble, shaping the timbre to sound like a tight backing vocal for pop songs, or a lush, organic ensemble with natural human variation.
These settings work alongside the phoneme editing and AI Retakes features already available in Synth V, so you can tweak consonant articulation and generate multiple performance variations for each choir part.
For workflow, you'll construct multi-part choirs by creating separate tracks for each voice part (soprano, alto, tenor, bass) and arrange them in Synth V. You can export the full track or individual stems to mix in your DAW.
The cost of Synt V Studio 2 is a one-time $99 fee, plus an additional $149 per AI choir voice collection. They offer a $299 bundle with all three collections. You can read a full overview of Synth V Studio 2 AI choir voices on their website.
Getting started in Synthesizer V Studio 2 Pro
Synth V2 is Japan's best AI voice generation DAW. If you want to dip your toe in, they currently offer a free 14-day trial of the software. This link is for your convenience. Please notice that it does not have an affiliate code attached to it.
Step 1. Download Synth V and install one of the AI choir voice collections. You'll be prompted to choose and install them during the app's onboarding wizard. However, if you skip that for some reason, you can always go back using the technique shown in the screenshot above. Click the microphone icon and then hit "manage voices".
Dreamtonics currently has 30 AI voice databases to choose from, not including the new AI choir voices. You can listen to demos of each voice here on their YouTube channel. Each of these AI models were trained on real, sung vocals from a human singing voice, in partnership with a licensed voice provider.
You can use all of the voices commercially without additional licenses.
Step 2. Create a new project and open the settings panel. Click on audio & midi to set your MIDI input and audio output device.
In my experience, the app's settings defaulted to "none" for input and output, so I was stumped about why I couldn't get the playback or record features to work. Be sure to update these settings first, or you might run into the same problem.
Step 3. Hit the record button to record your melody with a MIDI keyboard. Alternatively, you can select "Note Creation Mode" shown in the screenshot above. Then click and drag on the piano roll to create notes manually.
I rarely use the Note Editing Mode because note creation supports the most important tasks, like changing note duration and position on the piano roll.
Step 4. Add lyrics by double clicking on the word or phoneme (word fragments). The text area will switch to an editing mode with a blinking cursor, as shown in the blue annotated region above. You can technically stuff more than one word onto a MIDI note, but you'll see this error message asking you to fix it. My takeaway was, only use one word per note when rendering but it's okay to temporarily stash a couple words in a MIDI note while I'm working out a melody, as long as I go back and clean it up.
Step 5. Navigate to the "export audio" icon shown above, assign your destination folder and update the channel from mono to stereo. Then hit the "bounce to files" button to save the track.
These are the most essential skills to practice when you're first getting started.
In the next section I'm going to go deeper and highlight some of the new and advanced features available in the latest version of Synth V. This is where you'll really get to see the full voice customization that's possible with this app.
New features available in the latest version
Synthesizer V Studio was originally available as a free, basic version and a pro version. In 2025, the classic Synthesizer V Studio Pro became their basic version and V2 Pro took the crown as the new pro version.
Both versions are available for a one-time purchase, with version 2 coming in at only ten dollars more than the basic option.
Existing users can upgrade to the latest version for $49.99. Voice upgrades range from $29.99-99.99 depending on which package you select.
Here's a summary of the standout features that I noticed in version 2.
Faster rendering speeds
Original: Standard offline rendering.
V2 Pro: Up to 300% faster offline rendering, no GPU required.
The new engine uses a technique called multithreading to generate vocals in a fraction of the time, even computers with less RAM and CPU. This removes one of the biggest bottlenecks in vocal production. This live rendering feature has historically required expensive hardware for competing products.
AI Retakes for iterating on vocal stems
Original: Retakes were limited to pitch and timbre
V2 Pro: Now includes additional vocal rhythm variations
Music producers often use randomization to go fishing for special, expressive nuance. Traditionally, an engineer working in the studio with real singers will try to record a number of different vocal takes. Later on, they would "comp" or slice together their favorite moments from each take to create the final vocal track.
Synthesizer v studio pro understood this from the beginning and always offered pitch and timbre variants, but version two now includes additional timing variations. This makes it easier to explore different rhythmic articulations and correct awkward phrasing quickly, deepening your creative flexibility in the DAW.
As shown in the screenshot above, you can access the retakes by clicking the music icon located on the far-right nav menu. Then click one of the four "AI Retakes" pads. Watch as the waveforms below your piano roll are modified instantly. Hit the playback button to listen to the differences.
Vocal Modes
Original: Timbre-only vocal mode editing.
V2 Pro: Separate vocal modes for Pitch / Timbre / Pronunciation.
In Synthesizer V, there are two separate panels with "modes" that pertain to vocals. Both control parameters that shape the voice outputs, but you'll find them in different parts of the app.
Notes Panel: Singing and rapping modes will determine whether you're controlling intonation and tone (for rapping) or vibrato (for singing).
Voice Panel: Vocal modes control timbre of the vocal tone itself. You'll find knobs for adjusting how bright, heavy, whispery, soft and hoarse a voice is.
I've highlighted them in pink and blue respectively, so you can spot the difference.
Smart Pitch Controls
Original: Manual control and pitch deviation only.
V2 Pro: Introduces Smart Pitch Controls.
The piano roll has a set of controls for changing the vocal pitch on a fixed note. Think of the green MIDI notes as the primary target pitch, while the thin white lines drawn on top of them control expressiveness like vibrato.
Smart pitch controls allow you to double click on those thin white lines to create a control node. You can drag those up and down to control the vocal pitch and override the pitch value of the green MIDI note.
They call them "smart" controls because the application automatically adjusts the vocal pitch around your chosen node position, to make sure it results in a realistic human singing voice. I've experimented with this feature at length and can confirm that it works very well.
Phoneme Editing
Original: Duration and strength sliders only.
V2 Pro: Dedicated Phoneme Timing Panel.
Instead of relying on abstract sliders, users now get a direct, visual interface for resizing and shifting the timing of consonants within each syllable. This gives precise control over articulation and rhythm.
Real world, professional use cases for Synth V
When it comes to writing music with generative AI vocal production software, people often ask "Why not record a human instead?". It's a fair question to ask and something that I'd like to address, before we get into the nitty gritty details about this app's new features.
AI singing voices in hit songs (no human vocalist)
AI singing voices have been popular in Japan for almost two decades, with virtual singers like Vocaloid's Hatsune Miku taking the country by storm in live, holographic stage performances. Her AI voice model debuted as a Vocaloid product back in 2007 and continues to be hugely popular today.
In recent years, there have been a small collection of breakout hits, like Heart on my Sleeve and BBL Drizzy, that took AI generated songs mainstream. There are also some lesser known artists, like Obscurist Vinyl, that use AI songs for comedy and entertainment purposes.
Web apps like Suno and Udio have opened mid-fidelity AI generated music to the public. Most people are using these services recreationally but some are capitalizing on them through streaming and ad revenue. This poses ethical questions about whether AI music is competing with human artists, and these AI song companies have been criticized for not licensing the music used for model training.
Crafting AI vocals with Synthesizer V instead of Suno/Udio
AI generated songs that are published and distributed without any changes are not protected by copyright. Therefore, most composers are opting for a pro audio software solution like Synthesizer V instead. Dreamtonics licensed the vocal tracks that they trained their models on, making it a fair and equitable alternative to Suno and Udio.
Additionally, the vocal takes created with Synth V are copyright protected and do not require any additional royalty payments. This is true even if you publish the AI singing voices as is, without bringing a human singer in to recreate the AI tracks.
The most common use cases are still those involving a human, however. This is partly due to market conditions, as fans feel more connected to other humans. We'll expand on this in the next section and share two of the most common use cases for professional composers and songwriters using Synth V to assist in workflows where human-vocalists are still in the loop.
Sculpting vocal reference tracks for a human singer
It's more common to use a human singing voice during early and late stages of the creative process, with a tool like Synthesizer V empowering songwriters during the ideation phase. Let me explain a bit more so you understand what I mean.
Hitmakers are rarely the ones who actually sing and perform the final song. They're more likely to be composers who sell their work to labels, who manage the artist-vocalists who make the track their own.
Composers typically begin at a keyboard or guitar, humming and jotting down lyrics as they experiment with chord progressions. They might record the vocal melody themselves in an initial sketch, developing the project in their DAW over time. They can use Synth V during this initial ideation phase.
However, Synth V becomes even more valuable when it comes time to create a demo track for the target collaborator.
A male vocalist recording for a female artist, or vice versa, can use their MIDI keyboard to perform the melody and type lyrics into Synth V. Parameters for vocal performance can be carefully adjusted to create a high quality demo.
That vocal track can be sent over to a human vocalist for studio recording. Having already sculpted the vocal take with the utmost precision, the composer can communicate stylistic details they want the vocalist to retain in their performance. This cuts down on time and money wasted going back and forth with multiple takes.
Dreamtonics has made Synthesizer V Studio 2 Pro available with a 14 day free trial so you can get a feel for it before committing. If that sounds interesting to you, head over to the free trial page here to register.
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