======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '100'
                                          'artist'  'Deben Bhattacharya'
                                     'text_people'  ''
                                         'release'  '[Argo ZFB 49] Music from Hungary - The Living Tradition - P.1971'
                                           'title'  "B4 The Rain 1'35"
                                           '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-2', "
 "'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'  '4'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'loc-eur-hungary'
                                             'bpm'  '144.955'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[Argo ZFB 49] Music from Hungary - The Living Tradition - P.1971'
'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-hungary'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "B4 The Rain 1'35"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deben Bhattacharya'
'TRCK' (Track number/Position in set)               '4'
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.621869'

========================== row from database ==========================
                                              'id'  1501857
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Deben Bhattacharya - Music from Hungary (Argo, 1971)/B4 The Rain 1_35-sf.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  100
                                           'genre'  loc-eur-hungary
                                        'filesize'  4036728
                                           'mtime'  1620532689
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east (Argo, 1971) 1_35 sf loc eur hungary
                                      'tag_artist'  Deben Bhattacharya
                                     'tag_release'  [Argo ZFB 49] Music from Hungary - The Living Tradition - P.1971
                                       'tag_title'  B4 The Rain 1'35
                                             'bpm'  144.955
                                    'search_title'  '1':4 '135':6 '35':5 'b4':1 'rain':3 'the':2
                                   'search_artist'  'bhattacharya':2 'deben':1
                                  'search_release'  '1971':13 '49':4,5 'argo':1,2 'from':7 'hungary':8 'living':10 'music':6 'p':12 'p1971':14 'the':9 'tradition':11 'zfb':3
                                     'search_rest'  '00south':1 '1':9 '1971':7,8 '35':10 'argo':5,6 'east':4 'eur':13 'europe':2 'hungary':14 'loc':12 'middle':3 'sf':11
                                    'search_combo'  '00south':23 '1':4A,31 '135':6A '1971':21C,29,30 '35':5A,32 '49':12C,13C 'argo':9C,10C,27,28 'b4':1A 'bhattacharya':8B 'deben':7B 'east':26 'eur':35 'europe':24 'from':15C 'hungary':16C,36 'living':18C 'loc':34 'middle':25 'music':14C 'p':20C 'p1971':22C 'rain':3A 'sf':33 'the':2A,17C 'tradition':19C 'zfb':11C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', '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'  1620532688.842653  (2021-05-09 05:58:08)
                             'size'  4036728