Blob Opera
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Friday Night Funkin'Back to the main gameBlob Opera is a free browser toy where you control a blob singer and the other three voices automatically harmonize around you. Built by artist David Li with Google Arts and Culture, it uses machine learning trained on real opera singers. No musical background needed. You drag, the blobs sing. It works on desktop and mobile with no download, and it runs fine on school networks where many gaming sites are blocked.
What is Blob Opera?
Blob Opera is an experimental music toy, not a game with points or levels. You have four blob characters, each representing a different operatic voice: bass, tenor, alto, and soprano. Drag any blob around the screen and it sings while the remaining three respond in real time, forming four-part harmony. The machine learning model keeps everything in tune, so the result always sounds like actual opera regardless of how you move. You can hold multiple blobs on a touch screen or switch between them on desktop.
How to control the blobs
Each blob responds to drag input. Vertical movement sets the pitch and horizontal movement shapes the vowel sound. The blob you hold leads; the others follow.
| Action | Desktop | Mobile / touch |
|---|---|---|
| Change pitch | Drag blob up or down | Drag blob up or down |
| Change vowel | Drag blob left or right | Drag blob left or right |
| Switch singer | Click a different blob | Tap a different blob |
| Hold multiple blobs | Not supported | Use multiple fingers |
The four opera voices
Each blob covers a distinct voice part. Together they form a complete operatic quartet.
| Voice | Range | Role in the harmony |
|---|---|---|
| Bass | Lowest | Foundation and depth |
| Tenor | Low-mid | Male melody line |
| Alto | High-mid | Female harmony |
| Soprano | Highest | Lead or top voice |
Tips for making it sound good
- Start with the bass blob and drag it slowly upward to find a comfortable pitch before touching the others.
- Move left and right to hear how the vowel changes the tone. "Ah" and "Oh" tend to carry better than closed vowels.
- Try moving a second blob while holding the first on touch screens. The contrast between voice parts makes things more interesting than moving just one.
- Slow, deliberate moves give the model time to adjust and sound more natural than fast jerky drags.
- There is no wrong answer here. If the result sounds strange, let go and start fresh from wherever feels right.
Free, unblocked, and no download needed
Blob Opera runs entirely in the browser and costs nothing. There is no app to install and no account to create. Because it is a lightweight browser page with a Google Arts and Culture origin, it is generally accessible on school and library networks where dedicated gaming sites are blocked. It works on Chromebook, iPhone, Android, and desktop browsers without any plugins.