======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '131'
                                          'artist'  'Deben Bhattacharya'
                                     'text_people'  ''
                                         'release'  '[Argo ZRG 531] Music from Rumania - The Living Tradition - P.1967'
                                           'title'  "B5 De\x14a Mnna 2'10"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', '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'  "['traditional', 'ethnic', 'world music', 'folk', 'ethnomusicologist']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'loc-romania'
                                             'bpm'  '119.265'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[Argo ZRG 531] Music from Rumania - The Living Tradition - P.1967'
'TBPM' (BPM (beats per minute))                     '119.265'
'TCON' (Content type, a.k.a. Genre)                 'loc-romania'
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         "B5 De\x14a Mnna 2'10"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deben Bhattacharya'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['traditional', 'ethnic', 'world music', 'folk', 'ethnomusicologist']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.21 dB'
'TXXX:replaygain_track_peak'                        '0.312623'

========================== row from database ==========================
                                              'id'  1508332
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Deben Bhattacharya - Music from Rumania (Argo ZRG 531, 1967)/B5 De—a Mîná 2_10.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  131
                                           'genre'  loc-romania
                                        'filesize'  5268666
                                           'mtime'  1621627068
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east (Argo 531, 1967) De—a Mîná 2_10 loc romania
                                      'tag_artist'  Deben Bhattacharya
                                     'tag_release'  [Argo ZRG 531] Music from Rumania - The Living Tradition - P.1967
                                       'tag_title'  B5 Dea Mnna 2'10
                                             'bpm'  119.265
                                    'search_title'  '10':6 '2':5 '210':7 'a':3 'b5':1 'de':2 'mnna':4
                                   'search_artist'  'bhattacharya':2 'deben':1
                                  'search_release'  '1967':13 '531':4,5 'argo':1,2 'from':7 'living':10 'music':6 'p':12 'p1967':14 'rumania':8 'the':9 'tradition':11 'zrg':3
                                     'search_rest'  '00south':1 '10':20 '1967':9,10 '2':19 '531':7,8 'a':12,14 'argo':5,6 'dea':11,13 'east':4 'europe':2 'i':24,26 'loc':21 'mi':23 'middle':3 'mii':15,17 'na':25 'nai':16,18 'romania':22
                                    'search_combo'  '00south':24 '10':6A,43 '1967':22C,32,33 '2':5A,42 '210':7A '531':13C,14C,30,31 'a':3A,35,37 'argo':10C,11C,28,29 'b5':1A 'bhattacharya':9B 'de':2A 'dea':34,36 'deben':8B 'east':27 'europe':25 'from':16C 'i':47,49 'living':19C 'loc':44 'mi':46 'middle':26 'mii':38,40 'mnna':4A 'music':15C 'na':48 'nai':39,41 'p':21C 'p1967':23C 'romania':45 'rumania':17C 'the':18C 'tradition':20C 'zrg':12C
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['traditional', 'ethnic', 'world music', 'folk', 'ethnomusicologist']
                                        'tag_date'  1967
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627067.5514324  (2021-05-21 21:57:47)
                             'size'  5268666