======================== unified (from filesystem) ========================
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                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  ''
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                                        'comments'  ''
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rest: ''

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

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'TCMP'                                              '0'
'TCON' (Content type, a.k.a. Genre)                 'rock-nerd'
'TDRC' (Recording time)                             '1997'
'TDRL' (Release time)                               '1997-03-25'
'TDTG' (Tagging time)                               '2008-01-13 19:48:37'
'TIT2' (Title/songname/content description)         "They'll Need a Crane"
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'They Might Be Giants'
'TPE2' (Band/orchestra/accompaniment)               'They Might Be Giants'
'TRCK' (Track number/Position in set)               '14'
'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'
'TXXX:MusicBrainz Album Id'                         '17e1f289-a3e0-4bad-a049-9a2083c495e3'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '183d6ef6-e161-47ff-9085-063c8b897e97'
'TXXX:MusicBrainz Non-Album'                        '0'
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'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
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'TXXX:lastfmtags'                                   ['quirky', 'alternative', 'rock', 'pop', 'happy']
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'TXXX:q-drums'                                      '3'
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'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
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'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.372144'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'7ac7461d-a957-4719-a089-8bd25db865a5')

========================== 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);#14;#They_ll Need A Crane.mp3
                                         'working'  None
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                                    'duration_sec'  153
                                           'genre'  rock-nerd
                                        'filesize'  2457216
                                           'mtime'  1621786444
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                                        'rest_str'   00poprockelectronic poprock indierock MBZ;#They Giants;#Then 2);#14;#They_ll A rock nerd
                                      'tag_artist'  They Might Be Giants
                                     'tag_release'  Then: The Earlier Years (disc 2)
                                       'tag_title'  They'll Need a Crane
                                             'bpm'  93.0
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                                   'search_artist'  'be':3 'giants':4 'might':2 'they':1
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                                    'search_combo'  '00poprockelectronic':20 '14':32,36 '2':18C,19C,31,35 'a':5A,39 'be':9B 'crane':6A 'disc':16C,17C 'earlier':14C 'giants':10B,27,29 'indierock':22 'll':2A,34,38 'mbz':23,25 'might':8B 'need':4A 'nerd':41 'poprock':21 'rock':40 'the':13C 'then':11C,12C,28,30 'they':1A,7B,24,26,33,37 'theyll':3A 'years':15C
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['quirky', 'alternative', 'rock', 'pop', 'happy']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621786443.9770906  (2021-05-23 18:14:03)
                             'size'  2457216