======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '263'
                                          'artist'  'Robbie Williams'
                                     'text_people'  ''
                                         'release'  'M1+ Top 1000'
                                           'title'  'Angels'
                                           'quals'  ("['Q-JZFKS-1', 'Q-OLDST-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-chart-3', "
 "'q-drums-2', 'q-other-3', 'q-vocals-3', 'q-mixbeat-2', 'Q-PIANO-2']")
                                      'lastfmtags'  "['male vocalists', 'britpop', 'british', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '464'
                                      'tracktotal'  '1000'
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '145.059'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:¡ \x00\x00'                      PRIV(owner='AverageLevel', data=b'\xa1 \x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'M1+ Top 1000'
'TBPM' (BPM (beats per minute))                     '145.059'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Angels'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Robbie Williams'
'TRCK' (Track number/Position in set)               '464/1000'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['male vocalists', 'britpop', 'british', 'pop', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.30 dB'
'TXXX:replaygain_track_peak'                        '0.477477'

========================== row from database ==========================
                                              'id'  1350275
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/052 - Robbie Williams - Angels.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  263
                                           'genre'  rock-pop
                                        'filesize'  4222917
                                           'mtime'  1620389166
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 052 rock pop
                                      'tag_artist'  Robbie Williams
                                     'tag_release'  M1+ Top 1000
                                       'tag_title'  Angels
                                             'bpm'  145.059
                                    'search_title'  'angels':1
                                   'search_artist'  'robbie':1 'williams':2
                                  'search_release'  '1000':3 'm1':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'pop':4 'rock':3
                                    'search_combo'  '00poprockelectronic':7 '1000':6C '90s':8 'angels':1A 'm1':4C 'pop':10 'robbie':2B 'rock':9 'top':5C 'williams':3B
                                    'tag_tracknum'  464
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['male vocalists', 'britpop', 'british', 'pop', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389166.22558  (2021-05-07 14:06:06)
                             'size'  4222917