======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '266'
                                          'artist'  'Soul Asylum'
                                     'text_people'  ''
                                         'release'  'Super Hits'
                                           'title'  'Runaway Train'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', '90s', 'alternative', 'grunge', 'rock']"
                                     'discogstags'  "['house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '10'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'rock-gr-grunge'
                                             'bpm'  '117'
                                             'key'  '8B'
                                        'acoustid'  'acb81b3d-8f78-4cf1-867f-ae2fe7d2fcd4'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Super Hits'
'TBPM' (BPM (beats per minute))                     '117'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-grunge'
'TDOR' (Original release time)                      '2008'
'TDRC' (Recording time)                             '2008-08-26'
'TIT2' (Title/songname/content description)         'Runaway Train'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Soul Asylum'
'TPE2' (Band/orchestra/accompaniment)               'Soul Asylum'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Sony Music Special Markets'
'TRCK' (Track number/Position in set)               '1/10'
'TSO2'                                              'Soul Asylum'
'TSOP' (Performer sort order)                       'Soul Asylum'
'TSRC' (ISRC (international standard recording code))  'USSM19200235/USSM19200612'
'TXXX:Acoustid Id'                                  'acb81b3d-8f78-4cf1-867f-ae2fe7d2fcd4'
'TXXX:Artists'                                      'Soul Asylum'
'TXXX:CATALOGNUMBER'                                '729479'
'TXXX:Mp3gain_minmax'                               '104,190'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:MusicBrainz Album Artist Id'                  'b10db9ad-b4c3-47f3-a7a4-37864b134f65'
'TXXX:MusicBrainz Album Id'                         '47f3d145-4b40-4eeb-a9a5-25b488eaead5'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'b10db9ad-b4c3-47f3-a7a4-37864b134f65'
'TXXX:MusicBrainz Release Group Id'                 '713d8991-3059-40d2-b3d2-ec2e244516bc'
'TXXX:MusicBrainz Release Track Id'                 'cf948174-86a8-4ad4-9eae-b8b46495d4e0'
'TXXX:Q-HAP'                                        '2'
'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'                                  ['house', 'electronic']
'TXXX:lastfmtags'                                   ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
'TXXX:originalyear'                                 '2008'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.06 dB'
'TXXX:replaygain_track_peak'                        '0.605632'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'bb7df441-35b2-4c0d-99b5-6560a5bbbc51')

========================== row from database ==========================
                                              'id'  1339304
                                            'path'  /data/Music/Bulk/00poprockelectronic/Soul Assylum/Soul Asylum - Runaway Train.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  266
                                           'genre'  rock-gr-grunge
                                        'filesize'  3735740
                                           'mtime'  1636903089
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Assylum rock gr grunge
                                      'tag_artist'  Soul Asylum
                                     'tag_release'  Super Hits
                                       'tag_title'  Runaway Train
                                             'bpm'  117.0
                                    'search_title'  'runaway':1 'train':2
                                   'search_artist'  'asylum':2 'soul':1
                                  'search_release'  'hits':2 'super':1
                                     'search_rest'  '00poprockelectronic':1 'assylum':2 'gr':4 'grunge':5 'rock':3
                                    'search_combo'  '00poprockelectronic':7 'assylum':8 'asylum':4B 'gr':10 'grunge':11 'hits':6C 'rock':9 'runaway':1A 'soul':3B 'super':5C 'train':2A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', '90s', 'alternative', 'grunge', 'rock']
                                        'tag_date'  2008
                                     'discogstags'  ['house', 'electronic']

============================== file details ==============================
                                           'mtime'  1636903089.3395507  (2021-11-14 16:18:09)
                             'size'  3735740