======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '180'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Wedding Songs'
                                           'title'  'Track 12'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-1', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '16'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'loc-africa-ethiopia'
                                             'bpm'  '108.239'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'B609F210+191170+16+150+9303+'
'COMM:iTunes_CDDB_1:eng'                            'B609F210+191170+16+150+9303+18304+32475+48018+57282+70742+84045+97928+111130+122639+131509+145038+160216+173574+182745'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '12'
'PRIV:AverageLevel:\x1f\x12\x00\x00'                PRIV(owner='AverageLevel', data=b'\x1f\x12\x00\x00')
'PRIV:PeakValue:U~\x00\x00'                         PRIV(owner='PeakValue', data=b'U~\x00\x00')
'TALB' (Album/Movie/Show title)                     'Wedding Songs'
'TBPM' (BPM (beats per minute))                     '108.239'
'TCON' (Content type, a.k.a. Genre)                 'loc-africa-ethiopia'
'TDRC' (Recording time)                             '1965'
'TENC' (Encoded by)                                 'iTunes v4.2.0.72'
'TIT2' (Title/songname/content description)         'Track 12'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TRCK' (Track number/Position in set)               '12/16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-1.16 dB'
'TXXX:replaygain_track_peak'                        '0.697913'

========================== row from database ==========================
                                              'id'  1523824
                                            'path'  /data/Music/Bulk/00localcharacter/00africa/eritrean wedding songs ^ golden oldies from the 60_s & 70_s/12 track 12.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  180
                                           'genre'  loc-africa-ethiopia
                                        'filesize'  5054867
                                           'mtime'  1620525124
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00africa eritrean wedding songs ^ golden oldies from the 60_s & 70_s track loc africa ethiopia
                                      'tag_artist'  [unknown]
                                     'tag_release'  Wedding Songs
                                       'tag_title'  Track 12
                                             'bpm'  108.239
                                    'search_title'  'track':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'songs':2 'wedding':1
                                     'search_rest'  '00africa':1 '60':9 '70':11 'africa':15 'eritrean':2 'ethiopia':16 'from':7 'golden':5 'loc':14 'oldies':6 's':10,12 'songs':4 'the':8 'track':13 'wedding':3
                                    'search_combo'  '00africa':6 '60':14 '70':16 'africa':20 'eritrean':7 'ethiopia':21 'from':12 'golden':10 'loc':19 'oldies':11 's':15,17 'songs':5C,9 'the':13 'track':1A,18 'unknown':2B,3B 'wedding':4C,8
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525124.245315  (2021-05-09 03:52:04)
                             'size'  5054867