Cello Colors - Try the Alpha

Why Cello Colors?

Cello Colors offers an effortless way to play your instrument alongside real music.

No Music Reading Required
You don't need to read sheet music to start playing. But if you're curious, the app helps you naturally pick it up along the way.
Use It Anywhere
Runs right in your web browser. Works seamlessly on your computer, tablet, or phone.
Create or Customize Your Own Projects
Use the built-in editor to create new practice pieces, or open and personalize existing ones.

	Public alpha
Player	Included.
Editor	Included.
Open and save	Load and save projects to your device.
No Ads	Ad-free experience so you can stay focused.
No queues	❌ Some queues at peak times.
Audio enhacements and effects	High-quality speed change and loudness effects.
Offline solutions	🚧 PDF and audio export options, to practice without the app.
Cloud sync	20 slots to keep your favorite projects ready anywhere.
Tutorials and demos	🚧 Learn the basics of playing the cello and try playing some pieces.

App / Feature. Tuner screen.
Editor / Buxfix. Disable native browser context menu triggered by long-press gestures on mobile devices.
Editor / Buxfix. Better audio latency the first time a note sample is played (first-use asset loading latency).
Editor / Buxfix. Piano sounds stopped working at some point when editing scores on Android devices.
Editor / Buxfix. Refresh play/pause button when the audio ends.
Editor / Buxfix. Using the web browser back button will now stop the audio.
TODO. Editor / Feature. Better UX for note resizing.
TODO. Load / Feature. Enable tutorials and demos (built-in projects repository).
Load / Feature. Improved support for small screens (phones).
Player / Buxfix. Score image sometimes cuts before the last note.
Player / Buxfix. Seeking display time was not correct when the play speed was diferent from 100%.
Player / Buxfix. Black screen on large scores. Solved the webgl max_texture_size problem.
Player / Buxfix. Stereo was lost on some processed audios.
Player / Buxfix. Using the web browser back button didn't stop the audio.
Player / Feature. Improved support for small screens (phones).
Player / Feature. Higher contrast.
Player / Feature. Show the project description before starting.

App / Feature. Disable player and save screens while the score is empty.
App / Feature. Replaced default app title and icon.
App / Feature. Show a timeout count-down on project and audio uploading.
App / Feature. Support for any screen orientation when running as a PWA (Progressive Web App).
Editor / Bugfix. Moving a note to a negative position is no longer allowed.
Load / Feature. My projects (cloud save slots).
Player / Feature. Audio enhacements and effects selector.
Player / Feature. Loop option.
Player / Feature. Player starts at -8 seconds, to give time to get comfortable before the piece starts.
Player / Feature. Score nomenclature selector.
Player / Feature. Start from the begining option.
Player / Feature. Zoom and time seek gesture UI helpers.
Save / Bugfix. Android will no longer rename downloaded projects to a .ccp.txt extension. Projects are now served inside a zip file.
Save / Bugfix. Fixes error when downloading a project for the first time (due to async score uploads).
Save / Feature. My projects (cloud save slots).
Server / Feature. Added a pre-production environment (pre.cellocolors.com) for testing the next release.
Server / Feature. Uploading projects requires less storage on server.