metabrainz/README.org

# -*- mode: org; coding: utf-8; -*-
#+OPTIONS: toc:2 num:nil html-style:nil
#+author:
#+title:  MusicBrainz & ListenBrainz & other

* MusicBrainz

[[file:img/musicbrainz-logo.svg]]

MusicBrainz is a community-maintained open source encyclopedia of [[https://musicbrainz.org/doc/About][music information]]. The REST-based [[https://musicbrainz.org/doc/MusicBrainz_API][webservice API]] can be used for direct access to MusicBrainz data with output in XML and JSON.

This code provides a simple, incomplete yet possibly useful interface to some of the MusicBrainz and ListenBrainz APIs from emacs for exploratory  use in =org-mode= or behind the scenes sending listening metadata.

*  MusicBrainz API

- Recording documentation: https://musicbrainz.org/doc/Recording
- Release documentation: https://musicbrainz.org/doc/Release
- Artist documentation: https://musicbrainz.org/doc/Artist

** searching & browsing

Search supports the full  [[https://lucene.apache.org/core/7_7_2/queryparser/org/apache/lucene/queryparser/classic/package-summary.html#package.description][Lucene search syntax]].

** some examples

The API docs provide an example search for “Autechre albums & eps” using the URL https://musicbrainz.org/ws/2/release-group?artist=410c9baf-5469-44f6-9852-826524b80c61&type=album|ep

The equivalent function (which returns a raw response as an alist) would be…
#+BEGIN_SRC emacs-lisp
(musicbrainz-browse "release-group" "artist" "410c9baf-5469-44f6-9852-826524b80c61" "album|ep")
#+END_SRC

For slightly more legible output wrap with =musicbrainz-format=
#+BEGIN_SRC emacs-lisp
(musicbrainz-format
 (musicbrainz-browse "release-group"
                     "artist"
                     "410c9baf-5469-44f6-9852-826524b80c61"
                     "album|ep"))
#+END_SRC

A more interactive approach could start with  =(musicbrainz-search "artist" "Autechre")= or =(musicbrainz-search-artist "Autechre")= Which returns an MBID required for the lookup  =410c9baf-5469-44f6-9852-826524b80c61=

The MBID can be used for specific lookups (and checked if needed using =musicbrainz-mbid-p= )

#+BEGIN_SRC emacs-lisp
(musicbrainz-lookup "artist" "410c9baf-5469-44f6-9852-826524b80c61" "releases")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(musicbrainz-lookup-artist "410c9baf-5469-44f6-9852-826524b80c61")
#+END_SRC

| Autechre | electronic music duo | Group | [[https://musicbrainz.org/artist/410c9baf-5469-44f6-9852-826524b80c61][410c9baf-5469-44f6-9852-826524b80c61]] |

#+BEGIN_SRC emacs-lisp
(musicbrainz-lookup-artist-releases  "410c9baf-5469-44f6-9852-826524b80c61")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(musicbrainz-lookup-artist-recordings  "410c9baf-5469-44f6-9852-826524b80c61")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(musicbrainz-lookup-release "ec1ecfcc-f529-43d1-8aa6-2c7051ede00c")
#+END_SRC

| 1990 | Autechre / Saw You | Cassette Case | [[https://musicbrainz.org/release/ec1ecfcc-f529-43d1-8aa6-2c7051ede00c][ec1ecfcc-f529-43d1-8aa6-2c7051ede00c]] |

#+BEGIN_SRC emacs-lisp
(musicbrainz-lookup-recording "83730176-89ec-41a5-a4b6-476998f6291c")
#+END_SRC

| [untitled] | [[https://musicbrainz.org/recording/83730176-89ec-41a5-a4b6-476998f6291c][83730176-89ec-41a5-a4b6-476998f6291c]] |

#+BEGIN_SRC emacs-lisp
(musicbrainz-search-label "Warp")
#+END_SRC

| Warp | 46f0f4cd-8aab-4b33-b698-f459faf64190 |

#+BEGIN_SRC emacs-lisp
(musicbrainz-search-label "Music" 5)
#+END_SRC

| 100 | Sony Music      | global brand, excluding JP, owned by Sony Music Entertainment (1991 ongoing)                          | 9e6b4d7f-4958-4db7-8504-d89e315836af |
|  96 | [no label]      | Special purpose label – white labels, self-published releases and other “no label” releases (ongoing) | 157afde4-4bf5-4039-8ad2-5a15acc85176 |
|  91 | Polydor         | worldwide imprint, see annotation (1913-04-02 ongoing)                                                | ce24ab18-1bd6-4293-a486-546d13d6a5e2 |
|  91 | Universal Music | plain logo: “Universal Music” (ongoing)                                                               | 13a464dc-b9fd-4d16-a4f4-d4316f6a46c7 |
|  90 | ZYX Music       | (1992 ongoing)                                                                                        | 6844efda-a451-431e-8cc1-48ab111b4711 |

** MBID

“One of MusicBrainz' aims is to be the universal lingua franca for music by providing a reliable and unambiguous form of music identification; this music identification is performed through the use of MusicBrainz Identifiers  (MBIDs). An MBID is a 36 character Universally Unique Identifier that is permanently assigned to each entity in the database, i.e. artists, release groups, releases, recordings, works, labels, areas, places and URLs. MBIDs are also assigned to Tracks, though tracks do not share many other properties of entities.”

https://musicbrainz.org/doc/MusicBrainz_Identifier

#+BEGIN_SRC emacs-lisp
(musicbrainz-artist-to-mbid "Autechre")
#+END_SRC

returns =410c9baf-5469-44f6-9852-826524b80c61=

#+BEGIN_SRC emacs-lisp
(musicbrainz-mbid-p "410c9baf-5469-44f6-9852-826524b80c61")
#+END_SRC

** ambiguity

From the docs…

#+BEGIN_SRC text
John Williams, the soundtrack composer and conductor, has an artist MBID of 53b106e7-0cc6-42cc-ac95-ed8d30a3a98e
John Williams, the classical guitar player, has an artist MBID of 8b8a38a9-a290-4560-84f6-3d4466e8d791
#+END_SRC

#+BEGIN_SRC emacs-lisp
(musicbrainz-disambiguate-artist "John Williams" 3)
#+END_SRC

|     | Artist: John Williams                                         | MBID                                 |
| 100 | John Williams, American score composer                        | [[https://musicbrainz.org/artist/53b106e7-0cc6-42cc-ac95-ed8d30a3a98e][53b106e7-0cc6-42cc-ac95-ed8d30a3a98e]] |
|  94 | John Williams, classical guitarist                            | [[https://musicbrainz.org/artist/8b8a38a9-a290-4560-84f6-3d4466e8d791][8b8a38a9-a290-4560-84f6-3d4466e8d791]] |
|  92 | John Williams, English A&R executive, producer, songwriter... | [[https://musicbrainz.org/artist/eb5d7680-0c00-4b0c-b6eb-9605ff77723d][eb5d7680-0c00-4b0c-b6eb-9605ff77723d]] |

There are several “Bad Seeds”

#+BEGIN_SRC emacs-lisp
(musicbrainz-artist-to-mbid "Bad Seeds")
#+END_SRC

Which returns the MBID =7feb02f2-51fa-422d-838e-2c14ecb4c7b8= for “Tomorrows Bad Seeds”, however…

#+BEGIN_SRC emacs-lisp
(musicbrainz-disambiguate-artist "Bad Seeds" 7)
#+END_SRC

#+RESULTS:
|     | Artist: Bad Seeds                                         | MBID                                 |
| 100 | Tomorrows Bad Seeds, nil                                  | [[https://musicbrainz.org/artist/7feb02f2-51fa-422d-838e-2c14ecb4c7b8][7feb02f2-51fa-422d-838e-2c14ecb4c7b8]] |
|  98 | The Bad Seeds, 60s Texas rock band                        | [[https://musicbrainz.org/artist/3e593712-9f70-4b7a-b21b-466016998a3d][3e593712-9f70-4b7a-b21b-466016998a3d]] |
|  98 | The Bad Seeds, 60's US garage rock band from Erlanger, KY | [[https://musicbrainz.org/artist/34bc9a97-fa78-424e-8ca8-a904f978f041][34bc9a97-fa78-424e-8ca8-a904f978f041]] |
|  98 | The Bad Seeds, backing band for Nick Cave                 | [[https://musicbrainz.org/artist/eb2a8edc-5670-4896-82be-87db38de9583][eb2a8edc-5670-4896-82be-87db38de9583]] |
|  86 | Nick Cave & the Bad Seeds, nil                            | [[https://musicbrainz.org/artist/172e1f1a-504d-4488-b053-6344ba63e6d0][172e1f1a-504d-4488-b053-6344ba63e6d0]] |
|  50 | The Lightning Seeds, nil                                  | [[https://musicbrainz.org/artist/1ba601a0-3401-4b28-8ddd-9af8203661e8][1ba601a0-3401-4b28-8ddd-9af8203661e8]] |
|  49 | Seeds, UK dancehall                                       | [[https://musicbrainz.org/artist/a03cf587-a3d3-4847-ac41-e488f779a313][a03cf587-a3d3-4847-ac41-e488f779a313]] |



* ListenBrainz


[[file:img/listenbrainz-logo.svg]]

* listening

- https://listenbrainz.org
- https://listenbrainz.readthedocs.io/

* examples

#+BEGIN_SRC emacs-lisp
(setq listenbrainz-api-token "000-000-000")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-validate-token listenbrainz-api-token)
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-listens "zzzkt")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-listens "zzzkt" 33)
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-submit-single-listen "Matthew Thomas" "Taema" "Architecture")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-submit-single-listen "farmersmanual" "808808008088 (11)")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-submit-playing-now "farmersmanual" "808808008088 (11)")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-playing-now "zzzkt")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-stats-artists "zzzkt")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-stats-releases "zzzkt")
#+END_SRC

#+BEGIN_SRC emacs-lisp
(listenbrainz-stats-recordings "zzzkt" 13 "month")
#+END_SRC

* incompleteness

** Core API endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#core-api-endpoints

| POST /1/submit-listens                                  | listenbrainz-submit-listen        |
|                                                         | listenbrainz-submit-single-listen |
|                                                         | listenbrainz-submit-playing-now   |
| GET /1/validate-token                                   | listenbrainz-validate-token       |
| POST /1/delete-listen                                   | -                                 |
| GET /1/user/(playlist_user_name)/playlists/collaborator | -                                 |
| GET /1/user/(playlist_user_name)/playlists/createdfor   | -                                 |
| GET /1/users/(user_list)/recent-listens                 | -                                 |
| GET /1/user/(user_name)/similar-users                   | -                                 |
| GET /1/user/(user_name)/listen-count                    | -                                 |
| GET /1/user/(user_name)/playing-now                     | listenbrainz-playing-now          |
| GET /1/user/(user_name)/similar-to/(other_user_name)    | -                                 |
| GET /1/user/(playlist_user_name)/playlists              | -                                 |
| GET /1/user/(user_name)/listens                         | listenbrainz-listens              |
| GET /1/latest-import                                    | -                                 |
| POST /1/latest-import                                   | -                                 |

** Feedback API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#feedback-api-endpoints

| POST /1/feedback/recording-feedback                          | - |
| GET /1/feedback/recording/(recording_msid)/get-feedback      | - |
| GET /1/feedback/user/(user_name)/get-feedback-for-recordings | – |
| GET /1/feedback/user/(user_name)/get-feedback                | - |

** Recording Recommendation API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#core-api-endpoints

| GET /1/cf/recommendation/user/(user_name)/recording        | - |

** Recording Recommendation Feedback API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#recording-recommendation-feedback-api-endpoints

| POST /1/recommendation/feedback/submit                     | - |
| POST /1/recommendation/feedback/delete                     | - |
| GET /1/recommendation/feedback/user/(user_name)/recordings | - |
| GET /1/recommendation/feedback/user/(user_name)            | - |

** Statistics API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#statistics-api-endpoints

| GET /1/stats/sitewide/artists                    | -                             |
| GET /1/stats/user/(user_name)/listening-activity | -                             |
| GET /1/stats/user/(user_name)/daily-activity     | -                             |
| GET /1/stats/user/(user_name)/recordings         | listenbrainz-stats-recordings |
| GET /1/stats/user/(user_name)/artist-map         | -                             |
| GET /1/stats/user/(user_name)/releases           | listenbrainz-stats-releases   |
| GET /1/stats/user/(user_name)/artists            | listenbrainz-stats-artists    |

** Status API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#status-api-endpoints

| GET /1/status/get-dump-info | - |

** User Timeline API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#user-timeline-api-endpoints

| POST /1/user/(user_name)/timeline-event/create/notification | - |
| POST /1/user/(user_name)/timeline-event/create/recording    | - |
| POST /1/user/(user_name)/feed/events/delete                 | - |
| GET /1/user/(user_name)/feed/events                         | - |

** Social API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#social-api-endpoints

| GET /1/user/(user_name)/followers | listenbrainz-followers |
| GET /1/user/(user_name)/following | listenbrainz-following |
| POST /1/user/(user_name)/unfollow | -                      |
| POST /1/user/(user_name)/follow   | -                      |

** Pinned Recording API Endpoints

https://listenbrainz.readthedocs.io/en/production/dev/api/#pinned-recording-api-endpoints

| POST /1/pin/unpin                 | - |
| POST /1/pin                       | - |
| POST /1/pin/delete/(row_id)       | - |
| GET /1/(user_name)/pins/following | - |
| GET /1/(user_name)/pins           | - |


* otherBrainz
 - [[https://critiquebrainz.org/][CritiqueBrainz]]
 - [[https://bookbrainz.org/][BookBrainz]] → https://api.test.bookbrainz.org/1/docs/
 - [[https://listenbrainz.org/messybrainz/][MessyBrainz]]
 - [[https://coverartarchive.org/][Cover art archive]]

* further
- https://listenbrainz.org/user/troi-bot/playlists/
- https://github.com/metabrainz/bono-data-sets/blob/main/top_discoveries.py