======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '147'
                                          'artist'  'Jim Croce'
                                     'text_people'  ''
                                         'release'  'The Legendary Jim Croce'
                                           'title'  'Speedball Tucker'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '18'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-rock;mi-guitar-acoustic;rock-cppex;ifs-songwriter-folk'
                                             'bpm'  '112.6'
                                             'key'  '9B'
                                        'acoustid'  'ca83ebda-d2de-46bf-bdd2-730e5bf4c158'
rest: ''

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

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'PRIV:PeakValue:jl\x00\x00'                         PRIV(owner='PeakValue', data=b'jl\x00\x00')
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'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-rock',
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 'rock-cppex',
 'ifs-songwriter-folk']
'TDOR' (Original release time)                      '1989'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Speedball Tucker'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jim Croce'
'TPE2' (Band/orchestra/accompaniment)               'Jim Croce'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '9/18'
'TSO2'                                              'Croce, Jim'
'TSOP' (Performer sort order)                       'Croce, Jim'
'TXXX:Acoustid Id'                                  'ca83ebda-d2de-46bf-bdd2-730e5bf4c158'
'TXXX:Artists'                                      'Jim Croce'
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'TXXX:MusicBrainz Album Release Country'            'NL'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'fcfa9543-e113-4ef9-9ef6-455ba4cbe7af'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['pop', 'folk, world, & country']
'TXXX:lastfmtags'                                   ['rock', 'classic rock', '70s', 'folk', 'singer songwriter']
'TXXX:originalyear'                                 '1989'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'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'                        '0.598940'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'7c83716c-9837-4423-b420-68c9dace567f')

========================== row from database ==========================
                                              'id'  1387528
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The legendary Jim Croce/09  Speedball tucker - Jim Croce.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  147
                                           'genre'  ifs-songwriter-rock;mi-guitar-acoustic;rock-cppex;ifs-songwriter-folk
                                        'filesize'  4710415
                                           'mtime'  1640869941
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos legendary 09 tucker ifs songwriter rock;mi guitar acoustic;rock cppex;ifs songwriter folk
                                      'tag_artist'  Jim Croce
                                     'tag_release'  The Legendary Jim Croce
                                       'tag_title'  Speedball Tucker
                                             'bpm'  112.6
                                    'search_title'  'speedball':1 'tucker':2
                                   'search_artist'  'croce':2 'jim':1
                                  'search_release'  'croce':4 'jim':3 'legendary':2 'the':1
                                     'search_rest'  '00singer':1 'acoustic':12,14 'cppex':16,18 'eos':3 'folk':20 'guitar':11 'ifs':6,17,19 'legendary':4 'mi':8,10 'rock':7,9,13,15 'songwriter':2 'tucker':5
                                    'search_combo'  '00singer':9 'acoustic':20,22 'cppex':24,26 'croce':4B,8C 'eos':11 'folk':28 'guitar':19 'ifs':14,25,27 'jim':3B,7C 'legendary':6C,12 'mi':16,18 'rock':15,17,21,23 'songwriter':10 'speedball':1A 'the':5C 'tucker':2A,13
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']
                                      'lastfmtags'  ['rock', 'classic rock', '70s', 'folk', 'singer songwriter']
                                        'tag_date'  1989
                                     'discogstags'  ['pop', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1640869940.5044444  (2021-12-30 14:12:20)
                             'size'  4710415