======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '241'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'Changesbowie'
                                           'title'  'Golden Years'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['electronic', 'rock', 'experimental', 'glam']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '18'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '109'
                                             'key'  '12B'
                                        'acoustid'  'c15d27f5-1598-43da-884a-74764030d61a'
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Changesbowie'
'TBPM' (BPM (beats per minute))                     '109'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '1990'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Golden Years'
'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Rykodisc'
'TRCK' (Track number/Position in set)               '11/18'
'TSO2'                                              'Bowie, David'
'TSOP' (Performer sort order)                       'Bowie, David'
'TSRC' (ISRC (international standard recording code))  'USJT19900108'
'TXXX:Acoustid Id'                                  'c15d27f5-1598-43da-884a-74764030d61a'
'TXXX:Artists'                                      'David Bowie'
'TXXX:CATALOGNUMBER'                                'RCD 20171'
'TXXX:MusicBrainz Album Artist Id'                  '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Album Id'                         '547e0a0b-7a29-4734-93a3-cf6f49000f12'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Release Group Id'                 '1b22a0bf-efea-3330-b854-bf6632a3e499'
'TXXX:MusicBrainz Release Track Id'                 '6e519099-abde-4916-9827-4129215731f0'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'rock', 'experimental', 'glam']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:originalyear'                                 '1990'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.54 dB'
'TXXX:replaygain_track_peak'                        '0.644437'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'2ae8860b-b3e3-403a-88c2-b4f2cc2b76c7')

========================== row from database ==========================
                                              'id'  1355861
                                            'path'  /data/Music/Bulk/00poprockelectronic/David Bowie/Changes/David Bowie - Golden Years.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  241
                                           'genre'  ifs-songwriter
                                        'filesize'  3870279
                                           'mtime'  1636915938
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic ifs songwriter
                                      'tag_artist'  David Bowie
                                     'tag_release'  Changesbowie
                                       'tag_title'  Golden Years
                                             'bpm'  109.0
                                    'search_title'  'golden':1 'years':2
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'changesbowie':1
                                     'search_rest'  '00poprockelectronic':1 'ifs':2 'songwriter':3
                                    'search_combo'  '00poprockelectronic':6 'bowie':4B 'changesbowie':5C 'david':3B 'golden':1A 'ifs':7 'songwriter':8 'years':2A
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1990
                                     'discogstags'  ['electronic', 'rock', 'experimental', 'glam']

============================== file details ==============================
                                           'mtime'  1636915938.0894618  (2021-11-14 19:52:18)
                             'size'  3870279