# gwenlake

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Guillaume BEGUEC](https://cerebralvalley.ai/u/guillaumebgc)
- **GitHub:** https://github.com/guillaumebeguec/Lalala
- **Demo video:** https://github.com/guillaumebeguec/Lalala/blob/main/docs/lalala_demo.mp4
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1725

Lalala finds the song Shazam can't. Shazam needs the exact recording; Lalala works from what people actually have: a hummed tune, a few sung words, a vague memory ("the car ad with the whistling, around 2008"), a cover or live version, or a phone recording in a noisy bar. Instead of a lookup it runs an investigation: Llama 3.1 rewrites the memory into a sound query and a context query and keeps only grounded clues; several branches search in parallel (exact fingerprint, SAM Audio isolation as a second chance, PE-AV sound similarity, direct melody alignment of the hummed contour, one-way lyric hashes from Whisper, song cards written by Llama); a learned fusion votes, Llama reranks the top 10, and a calibrated confidence decides between one answer with a preview, a top-10 to listen to, or the question that narrows the search the most. Everything runs on one laptop (Apple Silicon, 24 GB) on Meta's open-weights models. Every claim is measured on frozen test sets the agent never sees: 93 % top-1 on noisy phone recordings, 19.6 % top-1 on 393 real hums (30× the published baseline), 30 % top-5 from a vague text memory. No audio and no lyrics are stored.

## More from Meta Global AI Developer Hackathon

- [MadsMen](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1722)
- [LEGO from My Bricks](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1723)
- [PA Cafe Cart Showroom (小屋購物車)](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1724)
- [NirmanOs](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1726)
- [The Ground](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1727)
- [Lewis Muguna](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1728)

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Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/1725. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt