======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '157'
                                          'artist'  '14'
                                     'text_people'  ''
                                         'release'  'American Popcorn (vol 2)'
                                           'title'  ' Freddy Hill - Mr Lucky'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', "
 "'q-play-3', 'Q-JZFKS-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-3', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['60s', 'rac', 'coldwave', 'hip-hop', 'swedish']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '125.315'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'American Popcorn (vol 2)'
'TBPM' (BPM (beats per minute))                     '125.315'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         ' Freddy Hill - Mr Lucky'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               '14'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['60s', 'rac', 'coldwave', 'hip-hop', 'swedish']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.82 dB'
'TXXX:replaygain_track_peak'                        '0.421352'

========================== row from database ==========================
                                              'id'  765284
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Vol. 2/14 - Freddy Hill - Mr Lucky.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  157
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3784526
                                           'mtime'  1620537158
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Vol. prerock jb jazz unsorted
                                      'tag_artist'  14
                                     'tag_release'  American Popcorn (vol 2)
                                       'tag_title'   Freddy Hill - Mr Lucky
                                             'bpm'  125.315
                                    'search_title'  'freddy':1 'hill':2 'lucky':4 'mr':3
                                   'search_artist'  
                                  'search_release'  '2':5,6 'american':1 'popcorn':2 'vol':3,4
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':8 'oldies':3 'prerock':7 'unsorted':9 'vol':5,6
                                    'search_combo'  '2':9C,10C 'american':5C 'country':14 'exotica':12 'freddy':1A 'hill':2A 'jazz':11 'jb':18 'lucky':4A 'mr':3A 'oldies':13 'popcorn':6C 'prerock':17 'unsorted':19 'vol':7C,8C,15,16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['60s', 'rac', 'coldwave', 'hip-hop', 'swedish']
                                        'tag_date'  1955
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620537158.2210448  (2021-05-09 07:12:38)
                             'size'  3784526