======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '155'
                                          'artist'  'Brian Setzer'
                                     'text_people'  ''
                                         'release'  'Rockabilly Riot'
                                           'title'  'Lonely Wolf'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock n roll', 'psychobilly', 'rock', 'rockabilly', 'swing']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '139.7'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM::\x00\x00\x00'                                ('00000F2E 00000CB7 00001B68 00001A35 0000C367 00004E4E 00006A1F 00006ECF '
 '00007547 00007547')
'TALB' (Album/Movie/Show title)                     'Rockabilly Riot'
'TBPM' (BPM (beats per minute))                     '139.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Lonely Wolf'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Brian Setzer'
'TRCK' (Track number/Position in set)               '22'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['rock n roll', 'psychobilly', 'rock', 'rockabilly', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.410833'

========================== row from database ==========================
                                              'id'  1476865
                                            'path'  /data/Music/Bulk/00poprockelectronic/musica/Brian Setzer/Rockabilly Riot/22 - Lonely Wolf.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  155
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  2493471
                                           'mtime'  1620526251
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic musica 22 rock rockabilly or psychobilly
                                      'tag_artist'  Brian Setzer
                                     'tag_release'  Rockabilly Riot
                                       'tag_title'  Lonely Wolf
                                             'bpm'  139.7
                                    'search_title'  'lonely':1 'wolf':2
                                   'search_artist'  'brian':1 'setzer':2
                                  'search_release'  'riot':2 'rockabilly':1
                                     'search_rest'  '00poprockelectronic':1 '22':3 'musica':2 'or':6 'psychobilly':7 'rock':4 'rockabilly':5
                                    'search_combo'  '00poprockelectronic':7 '22':9 'brian':3B 'lonely':1A 'musica':8 'or':12 'psychobilly':13 'riot':6C 'rock':10 'rockabilly':5C,11 'setzer':4B 'wolf':2A
                                    'tag_tracknum'  22
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock n roll', 'psychobilly', 'rock', 'rockabilly', 'swing']
                                        'tag_date'  1980
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620526250.9306474  (2021-05-09 04:10:50)
                             'size'  2493471