Practice guitar with animated tabs, a synchronized piano visualization, selectable instrument tracks, and adjustable playback speed. Open a song and start playing in your browser. Built by a solo maker with GPT-6 Astra. Currently available in Spanish.

How did Astra change the scope or ambition of what you built?

Before Astra, I had the idea and an initial structure for GuitarRoll: make learning guitar easier for myself and others. As a solo maker, Astra helped me turn that into a working visual player by writing all of the player code while I directed and tested it. The scope grew into musical data processing, synchronized animated tablature and audio, a piano visualization, selectable instrument tracks, and adjustable playback speed. I also built a video rendering system and a YouTube channel around the project. Astra made it possible to connect the musical logic, visual experience, and playback into a real product I could publish on my own. The public website is currently in Spanish and free to use. Astra was used during development; playback uses alphaTab and SpessaSynth.

Hi Product Hunt! I'm DanCode, the solo maker behind GuitarRoll. I wanted to make learning guitar easier for myself and others. I had the idea and an initial structure, then used GPT-6 Astra to write all of the player's code, with me directing and testing the work. The player is the heart of GuitarRoll: follow animated tabs, see notes on a synchronized piano keyboard, choose instrument tracks, and slow down playback to practice at your own pace. I also built a video rendering system and created a YouTube channel for the project. The system turns the visualizations into videos with synthesized audio. Under the hood, GuitarRoll uses alphaTab to read Guitar Pro files and SpessaSynth for audio synthesis. The website is currently in Spanish, but you can try the player directly here: https://guitarroll.com/es/tablat... I'd love your feedback: what would make this player more useful for your guitar practice?

How did Astra change the scope or ambition of what you built?

GuitarRoll

Play along with animated guitar tabs at your own pace

Play along with animated guitar tabs at your own pace