======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '285'
                                          'artist'  'Björk'
                                     'text_people'  ''
                                         'release'  'Isobel'
                                           'title'  'Charlene'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['female vocalists', 'alternative', 'icelandic', 'electronic', 'bjork']"
                                     'discogstags'  "['electronic', 'pop', 'idm']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '132.012'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Isobel'
'TBPM' (BPM (beats per minute))                     '132.012'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Charlene'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Björk'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'pop', 'idm']
'TXXX:lastfmtags'                                   ['female vocalists', 'alternative', 'icelandic', 'electronic', 'bjork']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.37 dB'
'TXXX:replaygain_track_peak'                        '0.854671'

========================== row from database ==========================
                                              'id'  184729
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bjork/MBZ;#Bjork;#Isobel;#02;#Charlene.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  285
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  7982968
                                           'mtime'  1637330486
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Bjork MBZ;#Bjork;#Isobel;#02;#Charlene ifs songwriter eos
                                      'tag_artist'  Björk
                                     'tag_release'  Isobel
                                       'tag_title'  Charlene
                                             'bpm'  132.012
                                    'search_title'  'charlene':1
                                   'search_artist'  'bjork':1,2
                                  'search_release'  'isobel':1
                                     'search_rest'  '00singer':1 '02':8,13 'bjork':4,6,11 'charlene':9,14 'eos':3 'ifs':15 'isobel':7,12 'mbz':5,10 'songwriter':2
                                    'search_combo'  '00singer':5 '02':12,17 'bjork':2B,3B,8,10,15 'charlene':1A,13,18 'eos':7 'ifs':19 'isobel':4C,11,16 'mbz':9,14 'songwriter':6
                                    'tag_tracknum'  2
                                      '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-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['female vocalists', 'alternative', 'icelandic', 'electronic', 'bjork']
                                        'tag_date'  1995
                                     'discogstags'  ['electronic', 'pop', 'idm']

============================== file details ==============================
                                           'mtime'  1637330486.2229042  (2021-11-19 15:01:26)
                             'size'  7982968