======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '140'
                                          'artist'  'Danny & The Juniors'
                                     'text_people'  ''
                                         'release'  'sweets'
                                           'title'  'Candy Cane Sugary Plum 2'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'doo wop', '50s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '15'
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '117.127'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ['0',
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 '00011678 0001E497',
 ' 00000000 00000210 00000900 00000000005E59F0 00000000 00334B6E 00000000 '
 '00000000 00000000 00000000 00000000 00000000']
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunes_CDDB_1:eng'                            'C008960F+165071+15+150+11388+24167+34205+45430+55946+67164+77743+88302+97903+107853+117789+132776+143172+153747'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '5'
'PRIV:AverageLevel:{\x14\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x14\x00\x00')
'PRIV:PeakValue:¡}\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1}\x00\x00')
'TALB' (Album/Movie/Show title)                     'sweets'
'TBPM' (BPM (beats per minute))                     '117.127'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '1955'
'TENC' (Encoded by)                                 'iTunes 8.0.2'
'TIT2' (Title/songname/content description)         'Candy Cane Sugary Plum 2'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Danny & The Juniors'
'TRCK' (Track number/Position in set)               '5/15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'rock n roll', 'doo wop', '50s', 'oldies']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.05 dB'
'TXXX:replaygain_track_peak'                        '0.583196'

========================== row from database ==========================
                                              'id'  736036
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Danny & The Juniors - Candy Cane Sugary Plum 2.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  140
                                           'genre'  set-th-candy
                                        'filesize'  3368790
                                           'mtime'  1620343112
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country set th candy
                                      'tag_artist'  Danny & The Juniors
                                     'tag_release'  sweets
                                       'tag_title'  Candy Cane Sugary Plum 2
                                             'bpm'  117.127
                                    'search_title'  '2':5 'candy':1 'cane':2 'plum':4 'sugary':3
                                   'search_artist'  'danny':1 'juniors':3 'the':2
                                  'search_release'  'sweets':1
                                     'search_rest'  'candy':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':5 'th':6
                                    'search_combo'  '2':5A 'candy':1A,16 'cane':2A 'country':13 'danny':6B 'exotica':11 'jazz':10 'juniors':8B 'oldies':12 'plum':4A 'set':14 'sugary':3A 'sweets':9C 'th':15 'the':7B
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'doo wop', '50s', 'oldies']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343111.5718648  (2021-05-07 01:18:31)
                             'size'  3368790