======================== unified (from filesystem) ========================
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                                        'duration'  '331'
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                                      'tracktotal'  '14'
                                            'date'  '2003'
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======================== rawer (from filesystem) ========================

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'TCOM' (Composer)                                   'David J. Matthews'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003-09-23'
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'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
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'TPE2' (Band/orchestra/accompaniment)               'Dave Matthews'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '9/14'
'TSO2'                                              'Matthews, Dave'
'TSOP' (Performer sort order)                       'Matthews, Dave'
'TSRC' (ISRC (international standard recording code))  'USRC10301322'
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========================== row from database ==========================
                                              'id'  1506166
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Dave Matthews - (2003) Some Devil (limited edition)/1-09 An_ Another Thing.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  331
                                           'genre'  ifs-songwriter
                                        'filesize'  6976835
                                           'mtime'  1636401753
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                                      'tag_artist'  Dave Matthews
                                     'tag_release'  Some Devil
                                       'tag_title'  An' Another Thing
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                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jam', 'rock', 'acoustic', 'alternative', 'singer songwriter']
                                        'tag_date'  2003
                                     'discogstags'  ['rock', 'alternative rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636401752.8774076  (2021-11-08 21:02:32)
                             'size'  6976835