PERSONAL MUSIC DISCOVERY
Three songs in.
Three songs in.
Eight paths out.
Start with three tracks that reveal different parts of your taste. Every set is explained, scored against your own history, and saved automatically.
8 recommendations
auto-saved history
local intelligence
STRONG STARTS
Try a complete three-song shape
CURRENT SET
Eight new paths
PERPETUAL DISCOVERY
Your next three
The best current matches are selected using local scoring while preserving some discovery range. Run them as the next seed set whenever you want.
YOUR LISTENING LEDGER
History
Search, filter, annotate, compare, export, and analyze every saved recommendation set.
FILTER-AWARE ANALYTICS
History charts
Style signals
from explanation languageAccessible data table
Recurring language
top filtered keywordsAccessible data table
Discovery trajectory
average local score by setAccessible data table
Listening outcomes
explicit behavior across matching tracksAccessible data table
Discovery-level effectiveness
save and replay ratesAccessible data table
COMPARE
Two slices of your History
vs
Seed effectiveness
which starting songs lead to the strongest explicit outcomesMATCHING HISTORY
Saved discovery sets
ON-DEVICE RANKING
Smart mixes
Jaro–Winkler and token similarity combine with saves, reactions, shares, and explicit listening outcomes to rank your remembered tracks.
These are local heuristics.
They do not read audio files, Spotify listening history, tempo, key, energy, or valence.
YOUR SIGNALS
Library
Saved tracks and slow burns remain attached to their full reports and History context.
SAVED
Keepers
SLOW BURNS
Needs another listen
LOCAL DATA & TRUST
Settings
Control retention, backups, recovery, storage durability, and diagnostics. No paid lookup service or subscription API is used by the SPA.
Keep your ledger durable
No silent pruning
Choose a soft target. MOSAIC only prunes after confirmation and protects pinned sets.
Recover accidental deletions
Nothing recently deleted.
Portable local vault
Export a normal backup, create an AES-GCM encrypted vault, verify a backup before trusting it, or link a writable local file where supported.
No backup created in this browser session.
No linked backup file.
Local observability
MOSAIC keeps a bounded diagnostic log for generation, imports, storage, and errors. It is not transmitted automatically.
What leaves this browser
- Recommendation Worker
- Three song strings, discovery level, and an empty compatibility avoidance field.
- YouTube / Spotify / Amazon Music
- Only when you click a song link; MOSAIC opens a precise artist-and-title search URL and does not call their APIs.
- Email / share sheet
- Only when you explicitly invoke sharing.
- History, scoring, analytics
- Remain local to this browser unless you export them.
No paid lookup service is required. Cross-device account sync and guaranteed canonical song IDs would require an additional service, so this SPA does not pretend to provide them.