======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '186'
                                          'artist'  'Kittie'
                                     'text_people'  ''
                                         'release'  'Spit'
                                           'title'  'Paper Doll'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['female vocalists', 'female fronted metal', 'metal', 'nu metal', 'metalcore']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '145.163'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Spit'
'TBPM' (BPM (beats per minute))                     '145.163'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Paper Doll'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Kittie'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['female vocalists', 'female fronted metal', 'metal', 'nu metal', 'metalcore']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.43 dB'
'TXXX:replaygain_track_peak'                        '0.488195'

========================== row from database ==========================
                                              'id'  1402416
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Kittie/MBZ;#Kittie;#Spit;#11;#Paper Doll.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  186
                                           'genre'  eid-metal
                                        'filesize'  2983395
                                           'mtime'  1620301046
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal MBZ;#Kittie;#Spit;#11;#Paper eid metal
                                      'tag_artist'  Kittie
                                     'tag_release'  Spit
                                       'tag_title'  Paper Doll
                                             'bpm'  145.163
                                    'search_title'  'doll':2 'paper':1
                                   'search_artist'  'kittie':1
                                  'search_release'  'spit':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '11':6,11 'eid':13 'kittie':4,9 'mbz':3,8 'metal':14 'paper':7,12 'spit':5,10
                                    'search_combo'  '00dwimp':5 '00metal':6 '11':10,15 'doll':2A 'eid':17 'kittie':3B,8,13 'mbz':7,12 'metal':18 'paper':1A,11,16 'spit':4C,9,14
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['female vocalists', 'female fronted metal', 'metal', 'nu metal', 'metalcore']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301045.6817856  (2021-05-06 13:37:25)
                             'size'  2983395