# Polar Frequency — music notice

"Polar Frequency" was AI-generated with MiniMax Music for Crystal Chang. The bundled MP3 is a 128 kbps re-encode of that track, with its original AIGC/MiniMax metadata retained. The accompanying feature JSON is offline analysis of the same track (25 fps band energy, onsets and beat grid); it is not an independently generated soundtrack.

The audio and feature data are excluded from Penguin's MIT source-code license. To the extent controlled by Crystal Chang, permission is granted to play and redistribute these files as part of Penguin and Penguin demonstrations, retaining this notice, AI-origin metadata and source credit. No license is granted for standalone soundtrack distribution, stock-music use, or unrelated projects. This is not a MiniMax endorsement or a trademark grant.

Generation-time commercial eligibility was confirmed by the owner on 2026-11-07; subscription dates and billing records were not independently inspected. The official [music subscription FAQ](https://www.minimax.io/audio/subscribe) states that eligible trial-period music may continue to be used commercially after the trial, subject to rights and terms. The [Audio Terms](https://www.minimax.io/audio/doc/terms-of-service.html) disclaim MiniMax ownership of user-generated content. The [Music Creation Terms](https://www.minimax.io/audio/doc/terms-of-service-music.html) require retaining identifiers and clearly labeling AI output. These terms do not warrant originality or third-party clearance.

Only the track and its analysis belong in this directory. The unused briefing MP3 is excluded. No voiceover, reference image, private account information or original project archive is included.