======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '64'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "29 Uummannaq-Upernavik   Nuka\x02rak' (Poul Hansen)"
                                           '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-1', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-greenland'
                                             'bpm'  '116.520'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000000F1 00000167 00001553 00002285 0000B01F 0000B01F 00004B9B 00005CFF '
 '0000B005 0000B005')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000714 00000000002B785C 00000000 0013AAB2 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TBPM' (BPM (beats per minute))                     '116.520'
'TCON' (Content type, a.k.a. Genre)                 'loc-greenland'
'TENC' (Encoded by)                                 'iTunes v7.5'
'TIT2' (Title/songname/content description)         "29 Uummannaq-Upernavik   Nuka\x02rak' (Poul Hansen)"
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'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: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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.35 dB'
'TXXX:replaygain_track_peak'                        '0.863241'

========================== row from database ==========================
                                              'id'  1514436
                                            'path'  /data/Music/Bulk/00localcharacter/55 Historical Recordings/29 Uummannaq-Upernavik _ Nukârak_ (Poul Hansen).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  64
                                           'genre'  loc-greenland
                                        'filesize'  1295267
                                           'mtime'  1621627096
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 55 Historical Recordings _ Nukârak_ loc greenland
                                      'tag_artist'  [unknown]
                                     'tag_release'  None
                                       'tag_title'  29 Uummannaq-Upernavik   Nukarak' (Poul Hansen)
                                             'bpm'  116.52
                                    'search_title'  '29':1 'hansen':11,12 'nuka':5,7 'poul':9,10 'rak':6,8 'upernavik':3 'uummannaq':2 'uummannaqupernavik':4
                                   'search_artist'  'unknown':1,2
                                  'search_release'  
                                     'search_rest'  '55':1 'greenland':7 'historical':2 'loc':6 'nukarak':4,5 'recordings':3
                                    'search_combo'  '29':1A '55':15 'greenland':21 'hansen':11A,12A 'historical':16 'loc':20 'nuka':5A,7A 'nukarak':18,19 'poul':9A,10A 'rak':6A,8A 'recordings':17 'unknown':13B,14B 'upernavik':3A 'uummannaq':2A 'uummannaqupernavik':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627095.5557213  (2021-05-21 21:58:15)
                             'size'  1295267