======================== unified (from filesystem) ========================
                                         'bitrate'  '176.049'
                                        'duration'  '249'
                                          'artist'  'Queen'
                                     'text_people'  ''
                                         'release'  'Greatest Hits II'
                                           'title'  "It's a Hard Life"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-2', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']"
                                     'discogstags'  "['electronic', 'rock', 'synth-pop', 'arena rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '17'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '84.491'
                                             'key'  '6B'
                                        'acoustid'  'bf630ffa-4084-47c0-96c5-87e8b1195403'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits II'
'TBPM' (BPM (beats per minute))                     '84.491'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '2014'
'TIT2' (Title/songname/content description)         "It's a Hard Life"
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Queen'
'TPE2' (Band/orchestra/accompaniment)               'Queen'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '7/17'
'TSO2'                                              'Queen'
'TSOP' (Performer sort order)                       'Queen'
'TSRC' (ISRC (international standard recording code))  'GBCEG0100043/GBCEG8400006/GBUM71029627'
'TXXX:Acoustid Id'                                  'bf630ffa-4084-47c0-96c5-87e8b1195403'
'TXXX:BARCODE'                                      '602547025883'
'TXXX:MusicBrainz Album Artist Id'                  '0383dadf-2a4e-4d10-a46a-e9e041da8eb3'
'TXXX:MusicBrainz Album Id'                         'e32f56e5-f999-4dfa-b273-951b765b1b93'
'TXXX:MusicBrainz Album Release Country'            'XW'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '0383dadf-2a4e-4d10-a46a-e9e041da8eb3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'rock', 'synth-pop', 'arena rock']
'TXXX:lastfmtags'                                   ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.85 dB'
'TXXX:replaygain_track_peak'                        '0.509078'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'583bdc51-88f8-4e2f-941a-0291f1dfddc6')

========================== row from database ==========================
                                              'id'  1515071
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Queen/Greatest Hits II/07 - It_s A Hard Life.mp3
                                         'working'  None
                                         'bitrate'  176
                                    'duration_sec'  249
                                           'genre'  rock-cppex-classic
                                        'filesize'  5498406
                                           'mtime'  1636038787
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 07 It_s A rock cppex classic
                                      'tag_artist'  Queen
                                     'tag_release'  Greatest Hits II
                                       'tag_title'  It's a Hard Life
                                             'bpm'  84.491
                                    'search_title'  'a':4 'hard':5 'it':1 'its':3 'life':6 's':2
                                   'search_artist'  'queen':1
                                  'search_release'  'greatest':1 'hits':2 'ii':3
                                     'search_rest'  'a':4 'classic':7 'classicprogpsy':1 'cppex':6 'it':2 'rock':5 's':3
                                    'search_combo'  'a':4A,14 'classic':17 'classicprogpsy':11 'cppex':16 'greatest':8C 'hard':5A 'hits':9C 'ii':10C 'it':1A,12 'its':3A 'life':6A 'queen':7B 'rock':15 's':2A,13
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'glam rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  2014
                                     'discogstags'  ['electronic', 'rock', 'synth-pop', 'arena rock']

============================== file details ==============================
                                           'mtime'  1636038787.3675826  (2021-11-04 16:13:07)
                             'size'  5498406