======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '391'
                                          'artist'  'organic industries'
                                     'text_people'  ''
                                         'release'  'Demography of Data'
                                           'title'  'Circles in an Empty Square'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dark ambient', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'electronic-ambient'
                                             'bpm'  '143.4'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Demography of Data'
'TBPM' (BPM (beats per minute))                     '143.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-ambient'
'TDRC' (Recording time)                             '2014'
'TIT2' (Title/songname/content description)         'Circles in an Empty Square'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tropic of Coldness'
'TPE2' (Band/orchestra/accompaniment)               'organic industries'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dark ambient', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.35 dB'
'TXXX:replaygain_track_peak'                        '0.455139'

========================== row from database ==========================
                                              'id'  1389635
                                            'path'  /data/Music/Bulk/00poprockelectronic/00ambient/organic industries - Tropic of Coldness [Ambient] [Drone] {Italy + Belgium}/2014 - Demography of Data [Organic Industries] {7}/4 Tropic of Coldness - Circles in an Empty Square.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  391
                                           'genre'  electronic-ambient
                                        'filesize'  6349185
                                           'mtime'  1636910916
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00ambient Tropic Coldness [Ambient] [Drone] {Italy + Belgium} 2014 [Organic Industries] {7} 4 Tropic Coldness electronic ambient
                                      'tag_artist'  organic industries
                                     'tag_release'  Demography of Data
                                       'tag_title'  Circles in an Empty Square
                                             'bpm'  143.4
                                    'search_title'  'an':3 'circles':1 'empty':4 'in':2 'square':5
                                   'search_artist'  'industries':2 'organic':1
                                  'search_release'  'data':3 'demography':1 'of':2
                                     'search_rest'  '00ambient':2 '00poprockelectronic':1 '2014':11 '4':17 '7':16 'ambient':5,6 'belgium':10 'coldness':4 'drone':7,8 'electronic':18 'industries':14,15 'italy':9 'organic':12,13 'tropic':3
                                    'search_combo'  '00ambient':12 '00poprockelectronic':11 '2014':21 '4':27 '7':26 'ambient':15,16 'an':3A 'belgium':20 'circles':1A 'coldness':14 'data':10C 'demography':8C 'drone':17,18 'electronic':28 'empty':4A 'in':2A 'industries':7B,24,25 'italy':19 'of':9C 'organic':6B,22,23 'square':5A 'tropic':13
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dark ambient', 'ambient']
                                        'tag_date'  2014
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636910916.1064634  (2021-11-14 18:28:36)
                             'size'  6349185