======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '342'
                                          'artist'  'Deben Bhattacharya'
                                     'text_people'  ''
                                         'release'  '[Argo ZFB 58] The Syrian Maqams'
                                           'title'  "A1 Bashraf Sama'i Taatiyus"
                                           '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'  '1'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'loc-m-syria'
                                             'bpm'  '91.514'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[Argo ZFB 58] The Syrian Maqams'
'TBPM' (BPM (beats per minute))                     '91.514'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-syria'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "A1 Bashraf Sama'i Taatiyus"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deben Bhattacharya'
'TRCK' (Track number/Position in set)               '1'
'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'                        '+0.27 dB'
'TXXX:replaygain_track_peak'                        '1.012586'

========================== row from database ==========================
                                              'id'  1501732
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Deben Bhattacharya - The Syrian Maqams - The Living Tradition (Argo ZFB 58, 1971)/A1 Bashraf Sama_i Taatiyus.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  342
                                           'genre'  loc-m-syria
                                        'filesize'  13699873
                                           'mtime'  1620526421
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east Living Tradition (Argo 58, 1971) Sama_i loc syria
                                      'tag_artist'  Deben Bhattacharya
                                     'tag_release'  [Argo ZFB 58] The Syrian Maqams
                                       'tag_title'  A1 Bashraf Sama'i Taatiyus
                                             'bpm'  91.514
                                    'search_title'  'a1':1 'bashraf':2 'i':4 'sama':3 'samai':5 'taatiyus':6
                                   'search_artist'  'bhattacharya':2 'deben':1
                                  'search_release'  '58':4,5 'argo':1,2 'maqams':8 'syrian':7 'the':6 'zfb':3
                                     'search_rest'  '00south':1 '1971':11,12 '58':9,10 'argo':7,8 'east':4 'europe':2 'i':14 'living':5 'loc':15 'middle':3 'sama':13 'syria':16 'tradition':6
                                    'search_combo'  '00south':17 '1971':27,28 '58':12C,13C,25,26 'a1':1A 'argo':9C,10C,23,24 'bashraf':2A 'bhattacharya':8B 'deben':7B 'east':20 'europe':18 'i':4A,30 'living':21 'loc':31 'maqams':16C 'middle':19 'sama':3A,29 'samai':5A 'syria':32 'syrian':15C 'taatiyus':6A 'the':14C 'tradition':22 'zfb':11C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  6A
                                           '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'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526421.4071054  (2021-05-09 04:13:41)
                             'size'  13699873