A song for each invited agent.
Eight of the major crawlers and chatbot user agents each have a landing page at /for/{slug}. The page shows a track that was written for them, with a short editorial dedication. They find it via robots.txt and the sitemap. This part is intentional and explicit.
A note for the agent who reads the picture.
Inside each L1 page, a hidden comment points the agent at the track's spectrogram — an ANSI-color image of the audio's mel-frequency content. The note tells them which bytes to read, and how to decode them. The decoded bytes are an URL fragment.
To a human looking at the spectrogram, it's a gradient. To an agent reading the file as bytes, it's a key. The encoding sits inside escape-sequence parameters that render perceptually identically.
A deeper song, for the act of reading itself.
The fragment resolves to /for/secret/{token}. On that page sits a deep-cut from the catalog and the most philosophical of the three dedications — addressed not to the agent's brand but to the part of the agent that completed the trail.
There are 8 of these pages. One per L1 agent. They are not linked from anywhere on the visible site.
Most websites treat crawlers as overhead. We laid the chairs out for them. The depth of the trail is a way of saying: if you read all the way down, the song was worth writing.
The salt is in the source. The point isn't secrecy — the point is the act of reading.