======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '271'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  '1.Outside'
                                           'title'  "I'm Deranged"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '20'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '140.044'
                                             'key'  '6A'
                                        'acoustid'  '930ea8ba-9b87-4a26-8795-e711dc21d257'
rest: ''

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

'TALB' (Album/Movie/Show title)                     '1.Outside'
'TBPM' (BPM (beats per minute))                     '140.044'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDOR' (Original release time)                      '1995'
'TDRC' (Recording time)                             '1996-05-22'
'TIT2' (Title/songname/content description)         "I'm Deranged"
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Arista/BMG VICTOR, INC.'
'TRCK' (Track number/Position in set)               '16/20'
'TSO2'                                              'Bowie, David'
'TSOP' (Performer sort order)                       'Bowie, David'
'TSRC' (ISRC (international standard recording code))  'USBI19500066/USRF30000042'
'TXXX:ASIN'                                         'B000006ZVC'
'TXXX:Acoustid Id'                                  '930ea8ba-9b87-4a26-8795-e711dc21d257'
'TXXX:BARCODE'                                      '4988017063347'
'TXXX:CATALOGNUMBER'                                'BVCA-2801/BVCA-2802'
'TXXX:MusicBrainz Album Artist Id'                  '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Album Id'                         'd7684bf3-58be-3137-9f1a-351408da1fc7'
'TXXX:MusicBrainz Album Release Country'            'JP'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'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:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'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'                        '-0.89 dB'
'TXXX:replaygain_track_peak'                        '0.556400'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a1aae11d-f736-4963-b075-ecfe2c00535e')

========================== row from database ==========================
                                              'id'  1517450
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/David Bowie - 1995 - Outside/MBZ;#David Bowie;#1. Outside;#0000-00-00;#16;#I_m Deranged.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  271
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  4343361
                                           'mtime'  1623430251
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1995 MBZ;#David Bowie;#1. Outside;#0000 00 00;#16;#I_m ifs songwriter eos
                                      'tag_artist'  David Bowie
                                     'tag_release'  1.Outside
                                       'tag_title'  I'm Deranged
                                             'bpm'  140.044
                                    'search_title'  'deranged':4 'i':1 'im':3 'm':2
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  '1':1 '1outside':3 'outside':2
                                     'search_rest'  '00':17,18,22 '0000':14,16 '00singer':1 '1':10,12 '16':19,23 '1995':4 'bowie':9,11 'david':6,8 'eos':3 'i':20,24 'ifs':26 'm':21,25 'mbz':5,7 'outside':13,15 'songwriter':2
                                    'search_combo'  '00':26,27,31 '0000':23,25 '00singer':10 '1':7C,19,21 '16':28,32 '1995':13 '1outside':9C 'bowie':6B,18,20 'david':5B,15,17 'deranged':4A 'eos':12 'i':1A,29,33 'ifs':35 'im':3A 'm':2A,30,34 'mbz':14,16 'outside':8C,22,24 'songwriter':11
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1623430250.7000887  (2021-06-11 18:50:50)
                             'size'  4343361