======================== unified (from filesystem) ========================
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                                        'duration'  '76'
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  ''
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                                        'comments'  ''
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                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

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'TDRC' (Recording time)                             '1997'
'TDRL' (Release time)                               '1997-03-25'
'TDTG' (Tagging time)                               '2008-01-13 19:48:38'
'TIT2' (Title/songname/content description)         'Stand on Your Own Head'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'They Might Be Giants'
'TPE2' (Band/orchestra/accompaniment)               'They Might Be Giants'
'TRCK' (Track number/Position in set)               '16'
'TSOP' (Performer sort order)                       'They Might Be Giants'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MusicBrainz Album Artist'                     'They Might Be Giants'
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'TXXX:MusicBrainz Album Artist Sortname'            'They Might Be Giants'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '183d6ef6-e161-47ff-9085-063c8b897e97'
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'TXXX:Q-LOCALNESS'                                  '1'
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'TXXX:lastfmtags'                                   ['quirky', 'alternative', 'rock', 'pop', 'happy']
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'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.18 dB'
'TXXX:replaygain_track_peak'                        '0.404356'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'2af47a53-b1f6-4093-8ed7-431d6c8a7097')

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/They Might Be Giants/MBZ;#They Might Be Giants;#Then The Earlier Years (disc 2);#16;#Stand On Your Own Head.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  76
                                           'genre'  rock-nerd
                                        'filesize'  1221317
                                           'mtime'  1621786444
                                   'redo_metaread'  0
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                                       'tag_title'  Stand on Your Own Head
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                                    'search_combo'  '00poprockelectronic':19 '16':31,34 '2':17C,18C,30,33 'be':8B 'disc':15C,16C 'earlier':13C 'giants':9B,26,28 'head':5A 'indierock':21 'mbz':22,24 'might':7B 'nerd':38 'on':2A,36 'own':4A 'poprock':20 'rock':37 'stand':1A,32,35 'the':12C 'then':10C,11C,27,29 'they':6B,23,25 'years':14C 'your':3A
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  10B
                                           '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-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['quirky', 'alternative', 'rock', 'pop', 'happy']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621786444.0170188  (2021-05-23 18:14:04)
                             'size'  1221317