I was curious if Opus 5.5 could come up with a good guitar riff, so I asked it.
One thing led to another and it started a band. Introducing… The Context Windows
Claude made this music video 100% locally on my MacBook in 24 hours:
- 3D modeling and video editing with Blender + Python scripts
- images with Qwen-Image 2.1
- music composed from GarageBand instruments on my Mac (Claude reverse engineered the file format)
- vocals from an open model called SoulX-Singer, which Claude got running on MLX
The way the characters fret and strum the guitars/bass in the video is physically accurate!
I don't know what Anthropic is feeding the 5.5 series, but they've made some sort of huge breakthrough in creativity. No other model comes close.
Art, video & music
An AI band's music video, made entirely on one MacBook in 24 hours
Asked for a guitar riff, Opus 5.5 started a band, The Context Windows. It composed with GarageBand instruments by reverse engineering the file format, got the open SoulX-Singer model singing on MLX, and animated physically accurate fretting in Blender.
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- Made with
- Claude Opus 5.5, Blender, Qwen-Image 2.1, GarageBand, SoulX-Singer, MLX
- Role
- Former YC founder, ex-Apple UI/UX and AI
- Posted









