======================== unified (from filesystem) ========================
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                                        'duration'  '197'
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                                     'tracknumber'  '7'
                                      'tracktotal'  '15'
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'loc-eur-greece'
                                             'bpm'  '103.0'
                                             'key'  '7A'
                                        'acoustid'  'f648f711-51eb-4d28-ad85-d48772aacf83'
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'TXXX:lastfmtags'                                   ['balkan', 'greek', 'greek fusion', 'electronic', 'greek electronica']
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00poprockelectronic/imam baildi - cookbook 2010 greece  electro-folk +/07 thlipsi.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  197
                                           'genre'  loc-eur-greece
                                        'filesize'  4800061
                                           'mtime'  1621630244
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                                        'rest_str'   00poprockelectronic imam baildi cookbook 2010 greece electro folk + 07 thlipsi loc eur greece
                                      'tag_artist'  Imam Baildi
                                     'tag_release'  The Imam Baildi Cookbook
                                       'tag_title'  Θλίψη (remix)
                                             'bpm'  103.0
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                                   'search_artist'  'baildi':2 'imam':1
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                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['balkan', 'greek', 'greek fusion', 'electronic', 'greek electronica']
                                        'tag_date'  2010
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621630243.668799  (2021-05-21 22:50:43)
                             'size'  4800061