The Forever Jukebox

download Offline App App

Top Songs

Loading top songs…

Loading trending songs…

Loading recent plays…

No favorites yet.

Step 1: Find a Spotify track.

Search results will appear here.

Upload by File

Upload by YouTube URL

No song selected.

Bringing it on home

Branch stats

Direction: Backward

Start: 00:00:00

End: 00:00:00

Difference: +00:00:00

Branch Match: 0%

arrow_drop_down

Finish out the song

The Forever Jukebox

Listen Time: 00:00:00 · Total Beats: 0 · Bringing it on home

FAQ

What the what?

The Forever Jukebox is an open-source modernization of Paul Lamere's Infinite Jukebox and Autocanonizer — rebuilt from the ground up and launched on January 1, 2026 by Creighton Linza. It generates a forever-evolving version of any song.

How does it work?

The app uses the Spotify Web API for track search/metadata and YouTube as the audio source. The audio is processed by the Forever Jukebox Analysis Engine, which approximates Spotify’s legacy Echo Nest analysis (now deprecated) by extracting beats, segments, and related features. Those features drive beat-synchronous playback in the frontend. On each beat, the player may jump to a different, sonically similar point in the track based on timbre, loudness, segment duration, and beat position. The visualizations map these potential jump paths for every beat.

The full source code is available in the forever-jukebox repository.

How can I tune the Jukebox?

Click the Tune button to open the tuning panel.
Lower the threshold for higher audio continuity; raise it for more branches.
Adjust branch probability min/max and ramp speed to shape how often jumps happen.
Use the checkboxes to allow or restrict certain branch types.
Click a branch in the visualization, then press Delete to remove it.

How do Favorites work?

Favorites are saved/unsaved by clicking the star icon on a song. They are stored locally in your browser and can optionally be synced across devices using a sync code obtained from the Favorites sync menu.
When you favorite a song, its tuning and deleted branches are saved too, so future loads restore your chosen parameters.
Use Reset in the Tune panel to restore default tuning and deleted branches (must be re-favorited to save changes).

Installable Offline App

For local/offline analysis and playback, open the Forever Jukebox Offline app and install it from your browser.

CACHED AUDIO

April 2026

Layout tweaks, a new light theme and added a What's New section - (you are here)!

March 2026

Extras mode added new ways to explore branches, including branch stats and keyboard-based branch cycling.
Bring It Home mode was added for a more linear playback option that finishes the song cleanly.
Playback behavior was refined to improve jump consistency.
The backend moved to madmom-beats-lite, improving progress reporting and memory footprint, while providing the same analysis quality.
The Offline App (PWA) gained better cached-analysis management, including the ability to view and delete saved analyses.

February 2026

The Offline App (PWA) launched, making it possible to analyze and play tracks directly in the browser without an internet connection.
Recently Played and Trending discovery lists were added.
A new Arc visualization replaced the Spiral view.
Loop optimization and playback reliability continued to improve.

January 2026

Favorites launched, followed shortly by Favorites Sync so saved tracks could travel between sessions/devices.
Support was added for user uploads and user-supplied YouTube jobs.
Playback timing and jump scheduling were improved for smoother, more reliable transitions.
Autocanonizer mode was added as a new playback option.

Tuning

Branch Similarity Threshold: 2

Computed default threshold: -

Branch Probability Min: 18%

Branch Probability Max: 50%

Branch Ramp Speed: 10%

Allow only reverse branches Allow only long branches Remove sequential branches Highlight forced anchor jump

Track Info

Song length: 00:00:00

Total beats: 0

Total branches: 0

Deleted branches: 0

Keyboard commands

Space: Start/stop playback

Shift (hold): Force branching while playing

H: Toggle Bring It Home mode

E: Toggle Extras mode

Left/Right: Cycle selected branch

Delete: Remove a selected branch

Favorites Sync

Enter the 3-word sync code to pull down your favorites.

Favorites Sync

Create a sync code to share your favorites between devices.

The Forever Jukebox & Analysis Engine by Creighton