---
name: lyrics-regenerate
description: Back up and replace lyrics on worship.hesed.sbs that are wrong, mistimed or misheard — typically machine transcripts — with published lyrics from LRCLIB. Use when the user says lyrics are incorrect/off/mistimed, names songs whose lyrics are bad, or asks to re-check songs on LRCLIB. Always backs up first and never writes an unverified artist match.
---

# Replace bad lyrics from LRCLIB

Machine transcripts (Whisper, Scribe) mishear words and drift out of time.
LRCLIB's published lyrics are usually correct and often **synced**. This skill
swaps them in — backup first, artist verified, one song at a time.

Script: `scripts/lyrics/lrclib_regen.py`.

## The rule: back up before you touch anything

The server keeps every previous version as a revision, and `/admin` can restore
one, but the script **also** writes an offline JSON backup of the current lyrics
of every song it will consider — on a dry run too. Do not skip it, do not write
your own one-off loop that lacks it.

```
/mnt/c/Users/josh/Documents/ytplayer-lyrics-backup-<YYYYmmdd-HHMMSS>.json
```

(`--backup-dir` or `YTP_BACKUP_DIR` to move it; on the devbox it falls back to `~/`.)

## Run it

```bash
cd ~/development/personal/ytplayer
export YTP_ADMIN_PASSWORD='…'        # or YTP_TOKEN=ytp_…

# 1) ALWAYS dry-run first and read every line of the output
python3 scripts/lyrics/lrclib_regen.py --tagged auto-transcribed

# 2) apply once the matches look right
python3 scripts/lyrics/lrclib_regen.py --tagged auto-transcribed --apply
```

Picking the songs:

| Flag | Picks |
|---|---|
| `--ids A,B,C` | exactly those videos |
| `--tagged auto-transcribed` | songs whose lyrics carry that tag (machine transcripts) |
| `--since '2026-09-19 01:45' --until '2026-09-19 02:00'` | songs whose lyrics were **saved** in that window |
| *(none)* | every song the server has lyrics for |

`--since/--until` is the one to reach for when the user says *"the songs that got
lyrics at the same time as X"* — read X's `updatedAt` from
`GET /api/notes/<id>` and bracket it by a few minutes.

Other flags: `--tolerance 6` (max duration difference, seconds), `--loose`
(accept matches whose artist doesn't line up — risky, see below).

## Reading the output

```
eJBlOV6cM7Y  LRCLIB synced | Israel Houghton     – Holy You Are     | 41 lines (was 38)
_n6dfB2Z-Ko  UNSURE plain  | Night Ranger        – Still            | 52 lines (was 44)
    ↳ artist doesn't match "Hillsong Worship" / the video title — left alone (use --loose to accept)
tYM05iaVu3I  no match   | Jesus At The Centre    | …                | keeping 60 lines (auto-transcribed)
```

- **LRCLIB** — verified match, will be written on `--apply`.
- **UNSURE** — title and duration fit but the artist doesn't appear in the channel
  name or the video title. **Left alone by default. Do not pass `--loose` to make
  it go away** — check the song by hand instead; this guard is what stopped a
  Hillsong song being overwritten with a Night Ranger one.
- **no match** — LRCLIB doesn't have it. Existing lyrics are kept. Fall back to
  `web_lyrics.py --agy --ids <id> --overwrite`, or fix it in the admin lyric editor.

Replaced songs are tagged `from LRCLIB (synced)` / `(plain text)`, which is also
how you tell later what has already been fixed.

## Restoring

- Per song, in the UI: `/admin` → recent edits → **Restore** on the older revision.
- From the JSON backup: `PUT /api/notes/<id>/lyrics` with
  `{"data": <songs[id].data>, "baseRev": <current rev from GET /api/notes/<id>>}`.
  Use the *current* rev, not the backed-up one — `baseRev` is optimistic
  concurrency, not a version to travel back to.

## Gotchas

- **LRCLIB rate-limits**: 503/429 on bursts. `http_json()` retries with backoff and
  the loop sleeps 0.4 s between songs. A song that fails all retries is reported and
  skipped — re-run it later rather than hammering.
- **Duration match is ±6 s** against `/api/streams` metadata. Live or extended cuts
  legitimately miss; raise `--tolerance` deliberately, per song.
- **Title cleaning** strips "(Official Video)", "Lyrics", "[HD]" etc.
  `clean_title`'s `NOISE` regex is used with `.sub()` and `.search()` — never give
  it a `/g`-style shared match state; a stateful regex silently skipped every other
  song once already.
- **Karaoke/minus-one** versions match the original recording's lyrics, which is
  usually what you want, but the timing won't line up. Check before applying.

Related skills: `lyrics-lookup` (songs with **no** lyrics), `deploy-prod`.