======================== unified (from filesystem) ========================
                                         'bitrate'  '192.018'
                                        'duration'  '106'
                                          'artist'  'The MSR Singers'
                                     'text_people'  ''
                                         'release'  'sweets'
                                           'title'  'Chocolate Candy'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-1', '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'  ("['outsider', 'song-poem', 'song poem', 'type: horror oldies', 'type: "
 "halloween']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '28'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '121.921'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:{\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x12\x00\x00')
'PRIV:PeakValue:¡x\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1x\x00\x00')
'TALB' (Album/Movie/Show title)                     'sweets'
'TBPM' (BPM (beats per minute))                     '121.921'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TENC' (Encoded by)                                 'Amadeus II'
'TIT2' (Title/songname/content description)         'Chocolate Candy'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'The MSR Singers'
'TRCK' (Track number/Position in set)               '4/28'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['outsider', 'song-poem', 'song poem', 'type: horror oldies', 'type: halloween']
'TXXX:q-bass'                                       '1'
'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'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.97 dB'
'TXXX:replaygain_track_peak'                        '0.560371'

========================== row from database ==========================
                                              'id'  735769
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/The MSR Singers - Chocolate Candy.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  106
                                           'genre'  set-th-candy
                                        'filesize'  2552601
                                           'mtime'  1620343130
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country set th candy
                                      'tag_artist'  The MSR Singers
                                     'tag_release'  sweets
                                       'tag_title'  Chocolate Candy
                                             'bpm'  121.921
                                    'search_title'  'candy':2 'chocolate':1
                                   'search_artist'  'msr':2 'singers':3 'the':1
                                  'search_release'  'sweets':1
                                     'search_rest'  'candy':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':5 'th':6
                                    'search_combo'  'candy':2A,13 'chocolate':1A 'country':10 'exotica':8 'jazz':7 'msr':4B 'oldies':9 'set':11 'singers':5B 'sweets':6C 'th':12 'the':3B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['outsider', 'song-poem', 'song poem', 'type: horror oldies', 'type: halloween']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343129.652465  (2021-05-07 01:18:49)
                             'size'  2552601