======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '389'
                                          'artist'  'Kid606'
                                     'text_people'  ''
                                         'release'  'Shout at the Döner'
                                           'title'  'dancehall of the dead'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['breakcore', 'electronica', 'glitch', 'idm', 'electronic', 'experimental']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '128.3'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shout at the Döner'
'TBPM' (BPM (beats per minute))                     '128.3'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'dancehall of the dead'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kid606'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['breakcore', 'electronica', 'glitch', 'idm', 'electronic', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.87 dB'
'TXXX:replaygain_track_peak'                        '0.565798'

========================== row from database ==========================
                                              'id'  982113
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Kid606/Kid606 - 2009 - Shout at the Doner (320 from lossless)/08 Kid606 - dancehall of the dead.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  389
                                           'genre'  electronic-experimental
                                        'filesize'  15585799
                                           'mtime'  1621867452
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 2009 Doner (320 from lossless) 08 electronic experimental
                                      'tag_artist'  Kid606
                                     'tag_release'  Shout at the Döner
                                       'tag_title'  dancehall of the dead
                                             'bpm'  128.3
                                    'search_title'  'dancehall':1 'dead':4 'of':2 'the':3
                                   'search_artist'  'kid606':1
                                  'search_release'  'at':2 'doner':4,5 'shout':1 'the':3
                                     'search_rest'  '2009':1 '320':3,4 'doner':2 'electronic':8 'experimental':9 'from':5 'lossless':6,7
                                    'search_combo'  '2009':11 '320':13,14 'at':7C 'dancehall':1A 'dead':4A 'doner':9C,10C,12 'electronic':18 'experimental':19 'from':15 'kid606':5B 'lossless':16,17 'of':2A 'shout':6C 'the':3A,8C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['breakcore', 'electronica', 'glitch', 'idm', 'electronic', 'experimental']
                                        'tag_date'  2009
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621867452.4759512  (2021-05-24 16:44:12)
                             'size'  15585799