======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '211'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'Aladdin Sane'
                                           'title'  'The Prettiest Star'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'Q-PLAY-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-vocals-3', 'q-mixbeat-2', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['rock', 'glam']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '14'
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos;set-pl-sced'
                                             'bpm'  '118'
                                             'key'  '4A'
                                        'acoustid'  'a97e81a5-1663-4a9a-9b87-d34c3da0b97f'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000048A 0000048F 000011D1'
'COMM:iTunNORM:eng'                                 (' 0000048A 0000048F 000011D1 0000110B 00024A35 00024A07 00004F7F 00004BE0 '
 '00015FD5 00015FD5')
'TALB' (Album/Movie/Show title)                     'Aladdin Sane'
'TBPM' (BPM (beats per minute))                     '118'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-eos', 'set-pl-sced']
'TDOR' (Original release time)                      '1973'
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'The Prettiest Star'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '7/14'
'TSO2'                                              'Bowie, David'
'TSOP' (Performer sort order)                       'Bowie, David'
'TSRC' (ISRC (international standard recording code))  'USJT10300118/USJT11300007/USJT19900048'
'TXXX:Acoustid Id'                                  'a97e81a5-1663-4a9a-9b87-d34c3da0b97f'
'TXXX:Artists'                                      'David Bowie'
'TXXX:MusicBrainz Album Artist Id'                  '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Album Id'                         '8a99e39e-2b80-4fb7-a30f-b53bdf965997'
'TXXX:MusicBrainz Album Status'                     'bootleg'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Release Group Id'                 '50f8710f-3ae6-319b-85a7-afe783f13449'
'TXXX:MusicBrainz Release Track Id'                 '6d1637f8-0fd2-32bc-8d82-05117d9ed762'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'glam']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:originalyear'                                 '1973'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.16 dB'
'TXXX:replaygain_track_peak'                        '0.540418'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'ebdfd170-9841-4cdb-8945-8b864b956aed')
'USLT::XXX'                                         ("Cold fire, you've got everything but cold fire\r\n"
 'You will be my rest and peace, child\r\n'
 'I moved up to take a place\r\n'
 'Near you\r\n'
 '\r\n'
 "So tired, it's the sky that makes you feel tried\r\n"
 "It's a trick to make you see wide\r\n"
 'It can all but break your heat\r\n'
 'In pieces\r\n'
 '\r\n'
 'Staying back in your memory\r\n'
 'Are the movies in the past?\r\n'
 'How you moved is all it takes\r\n'
 'To sing a song of when I loved\r\n'
 'The prettiest star\r\n'
 '\r\n'
 'One day, though it might as well be someday\r\n'
 'You and I will rise up all the way\r\n'
 'All because of what you are\r\n'
 'The prettiest star\r\n'
 '\r\n'
 'Staying back in your memory\r\n'
 'Are the movies in the past?\r\n'
 'How you moved is all it takes\r\n'
 'To sing a song of when I loved\r\n'
 'The prettiest star\r\n'
 '\r\n'
 'One day, though it might as well be someday\r\n'
 'You and I will rise up all the way\r\n'
 'All because of what you are\r\n'
 'The prettiest star')

========================== row from database ==========================
                                              'id'  313142
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/[1973] Aladdin Sane/07 The Prettiest Star.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  211
                                           'genre'  ifs-songwriter-eos;set-pl-sced
                                        'filesize'  3431613
                                           'mtime'  1636400835
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [1973] 07 ifs songwriter eos;set pl sced
                                      'tag_artist'  David Bowie
                                     'tag_release'  Aladdin Sane
                                       'tag_title'  The Prettiest Star
                                             'bpm'  118.0
                                    'search_title'  'prettiest':2 'star':3 'the':1
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'aladdin':1 'sane':2
                                     'search_rest'  '00singer':1 '1973':4,5 'eos':3,7,9 'ifs':6 'pl':11 'sced':12 'set':8,10 'songwriter':2
                                    'search_combo'  '00singer':8 '1973':11,12 'aladdin':6C 'bowie':5B 'david':4B 'eos':10,14,16 'ifs':13 'pl':18 'prettiest':2A 'sane':7C 'sced':19 'set':15,17 'songwriter':9 'star':3A 'the':1A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'Q-PIANO-2', 'q-mixbeat-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1973
                                     'discogstags'  ['rock', 'glam']

============================== file details ==============================
                                           'mtime'  1636400834.5019767  (2021-11-08 20:47:14)
                             'size'  3431613