======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '293'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'Black Tie White Noise'
                                           'title'  "Don't Let Me Down & Down"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['electronic', 'rock', 'abstract', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '135.274'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Black Tie White Noise'
'TBPM' (BPM (beats per minute))                     '135.274'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         "Don't Let Me Down & Down"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'abstract', 'experimental']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.14 dB'
'TXXX:replaygain_track_peak'                        '0.767444'

========================== row from database ==========================
                                              'id'  1505265
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/Black Tie White Noise/MBZ;#David Bowie;#Black Tie White Noise;#09;#Don_t Let Me Down & Down.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  293
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  4693502
                                           'mtime'  1623430255
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos MBZ;#David Bowie;#Black Noise;#09;#Don_t ifs songwriter eos
                                      'tag_artist'  David Bowie
                                     'tag_release'  Black Tie White Noise
                                       'tag_title'  Don't Let Me Down & Down
                                             'bpm'  135.274
                                    'search_title'  'don':1 'dont':3 'down':6 'let':4 'me':5 't':2
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'black':1 'noise':4 'tie':2 'white':3
                                     'search_rest'  '00singer':1 '09':13,17 'black':9,11 'bowie':8,10 'david':5,7 'don':14,18 'eos':3 'ifs':20 'mbz':4,6 'noise':12,16 'songwriter':2 't':15,19
                                    'search_combo'  '00singer':13 '09':25,29 'black':9C,21,23 'bowie':8B,20,22 'david':7B,17,19 'don':1A,26,30 'dont':3A 'down':6A 'eos':15 'ifs':32 'let':4A 'mbz':16,18 'me':5A 'noise':12C,24,28 'songwriter':14 't':2A,27,31 'tie':10C 'white':11C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1993
                                     'discogstags'  ['electronic', 'rock', 'abstract', 'experimental']

============================== file details ==============================
                                           'mtime'  1623430254.6613271  (2021-06-11 18:50:54)
                             'size'  4693502