======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '497'
                                          'artist'  'Deben Bhattacharya'
                                     'text_people'  ''
                                         'release'  'Music from Iran - The Living Tradition - Argo ZFB 51 - P.1971'
                                           'title'  'B2 Mahour on Setar - Eskandare Ebrahimi'
                                           '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'  '2'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'loc-m-iran'
                                             'bpm'  '116.655'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Music from Iran - The Living Tradition - Argo ZFB 51 - P.1971'
'TBPM' (BPM (beats per minute))                     '116.655'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-iran'
'TDRC' (Recording time)                             '1955'
'TENC' (Encoded by)                                 'LAME 3.98 (Max 0.9.1)'
'TIT2' (Title/songname/content description)         'B2 Mahour on Setar - Eskandare Ebrahimi'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Deben Bhattacharya'
'TRCK' (Track number/Position in set)               '2'
'TXXX:ENCODINGTIME'                                 '2011-02-13T21:40:07'
'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:TAGGINGTIME'                                  '2011-02-13T21:40:07'
'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'                        '+2.38 dB'
'TXXX:replaygain_track_peak'                        '0.916325'

========================== row from database ==========================
                                              'id'  1237770
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Deben Bhattacharya - Music from Iran (Argo ZFB 51, 1955)/Deben Bhattacharya - Music from Iran (Argo ZFB 51, 1955) - 04 - B2 Mahour on Setar - Eskandare Ebrahimi.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  497
                                           'genre'  loc-m-iran
                                        'filesize'  19895131
                                           'mtime'  1620526559
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east (Argo 51, 1955) (Argo 51, 1955) 04 loc iran
                                      'tag_artist'  Deben Bhattacharya
                                     'tag_release'  Music from Iran - The Living Tradition - Argo ZFB 51 - P.1971
                                       'tag_title'  B2 Mahour on Setar - Eskandare Ebrahimi
                                             'bpm'  116.655
                                    'search_title'  'b2':1 'ebrahimi':6 'eskandare':5 'mahour':2 'on':3 'setar':4
                                   'search_artist'  'bhattacharya':2 'deben':1
                                  'search_release'  '1971':11 '51':9 'argo':7 'from':2 'iran':3 'living':5 'music':1 'p':10 'p1971':12 'the':4 'tradition':6 'zfb':8
                                     'search_rest'  '00south':1 '1955':9,10 '51':7,8 'argo':5,6 'east':4 'europe':2 'iran':12 'loc':11 'middle':3
                                    'search_combo'  '00south':21 '1955':29,30 '1971':19C '51':17C,27,28 'argo':15C,25,26 'b2':1A 'bhattacharya':8B 'deben':7B 'east':24 'ebrahimi':6A 'eskandare':5A 'europe':22 'from':10C 'iran':11C,32 'living':13C 'loc':31 'mahour':2A 'middle':23 'music':9C 'on':3A 'p':18C 'p1971':20C 'setar':4A 'the':12C 'tradition':14C 'zfb':16C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  5B
                                           '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'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526558.7370403  (2021-05-09 04:15:58)
                             'size'  19895131