======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '273'
                                          'artist'  'Don Caballero'
                                     'text_people'  ''
                                         'release'  'American Don'
                                           'title'  "Fire Back About Your New Baby's Sex"
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['math rock', 'instrumental', 'progressive rock', 'post rock', 'experimental']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '9'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-unsorted;set-pl-sced'
                                             'bpm'  '123.632'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00001899 00001200 00007DF9 00003E29 000186E5 00030D85 000076EE 000075A7 '
 '0002E630 0002E630')
'TALB' (Album/Movie/Show title)                     'American Don'
'TBPM' (BPM (beats per minute))                     '123.632'
'TCON' (Content type, a.k.a. Genre)                 ['rock-unsorted', 'set-pl-sced']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         "Fire Back About Your New Baby's Sex"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Don Caballero'
'TPE2' (Band/orchestra/accompaniment)               'Don Caballero'
'TRCK' (Track number/Position in set)               '1/9'
'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'                                   ['math rock', 'instrumental', 'progressive rock', 'post rock', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.93 dB'
'TXXX:replaygain_track_peak'                        '0.390582'

========================== row from database ==========================
                                              'id'  1514545
                                            'path'  /data/Music/Bulk/00poprockelectronic/Don Caballero/[2000] American Don/01 Fire Back About Your New Baby_s Sex.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  273
                                           'genre'  rock-unsorted;set-pl-sced
                                        'filesize'  8780658
                                           'mtime'  1620389562
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [2000] 01 Baby_s rock unsorted;set pl sced
                                      'tag_artist'  Don Caballero
                                     'tag_release'  American Don
                                       'tag_title'  Fire Back About Your New Baby's Sex
                                             'bpm'  123.632
                                    'search_title'  'about':3 'baby':6 'babys':8 'back':2 'fire':1 'new':5 's':7 'sex':9 'your':4
                                   'search_artist'  'caballero':2 'don':1
                                  'search_release'  'american':1 'don':2
                                     'search_rest'  '00poprockelectronic':1 '2000':2,3 'baby':4 'pl':11 'rock':6 's':5 'sced':12 'set':8,10 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':14 '2000':15,16 'about':3A 'american':12C 'baby':6A,17 'babys':8A 'back':2A 'caballero':11B 'don':10B,13C 'fire':1A 'new':5A 'pl':24 'rock':19 's':7A,18 'sced':25 'set':21,23 'sex':9A 'unsorted':20,22 'your':4A
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['math rock', 'instrumental', 'progressive rock', 'post rock', 'experimental']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620389561.9818485  (2021-05-07 14:12:41)
                             'size'  8780658