======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '221'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'The Man Who Sold the World'
                                           'title'  'Lightning Frightening'
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                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '13'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos;set-pl-sced'
                                             'bpm'  '94'
                                             'key'  '3A'
                                        'acoustid'  '322c6298-2c49-4324-92dd-c79459b3da41'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000006AE 0000069A 000027B6 00002515 0002E647 0002E647 00005A50 00005ADC '
 '00029855 00029855')
'TALB' (Album/Movie/Show title)                     'The Man Who Sold the World'
'TBPM' (BPM (beats per minute))                     '94'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-eos', 'set-pl-sced']
'TDOR' (Original release time)                      '1970'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Lightning Frightening'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Rykodisc'
'TRCK' (Track number/Position in set)               '10/13'
'TSO2'                                              'Bowie, David'
'TSOP' (Performer sort order)                       'Bowie, David'
'TXXX:ASIN'                                         'B0000009NG'
'TXXX:Acoustid Id'                                  '322c6298-2c49-4324-92dd-c79459b3da41'
'TXXX:Artists'                                      'David Bowie'
'TXXX:CATALOGNUMBER'                                'RCD 10132'
'TXXX:MusicBrainz Album Artist Id'                  '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Album Id'                         '246a9545-4a25-3204-a817-e52f9e5ae730'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Release Group Id'                 '2536a41d-fde9-35d5-a6c6-cd4d94ffd916'
'TXXX:MusicBrainz Release Track Id'                 '1a028644-a0a7-3bb3-b6ea-cfe4c3deba24'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['glam', 'blues rock', 'alternative rock', 'rock']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:originalyear'                                 '1970'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.09 dB'
'TXXX:replaygain_track_peak'                        '0.640299'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b6e8ca51-4c95-4f31-9cce-3c207a5af523')
'USLT::XXX'                                         ("I'll give you back my farm and I'll give you back my house\n"
 "I'll give you back my right to be free\n"
 "I've got moon, I've got sun\n"
 'Lightning, lightning, lightning\n'
 "I've got me, I've got you\n"
 'Frightening, frightening, frightening\n'
 '\n'
 "I'll give you back my farm and I'll give you back my house\n"
 '\n'
 "I'll give you back my right to be free\n"
 "I'll give you back my farm and I'll give you back my house\n"
 "I'll give you back my right to be free\n"
 "I've got moon, I've got sun\n"
 "(I've got) Lightning, lightning, lightning\n"
 "I've got me, I've got you\n"
 "(It's) Frightening, frightening, frightening")

========================== row from database ==========================
                                              'id'  396103
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/[1971] The Man Who Sold The World/10 Lightning Frightening.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  221
                                           'genre'  ifs-songwriter-eos;set-pl-sced
                                        'filesize'  3645142
                                           'mtime'  1636400843
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [1971] 10 ifs songwriter eos;set pl sced
                                      'tag_artist'  David Bowie
                                     'tag_release'  The Man Who Sold the World
                                       'tag_title'  Lightning Frightening
                                             'bpm'  94.0
                                    'search_title'  'frightening':2 'lightning':1
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'man':2 'sold':4 'the':1 'who':3 'world':5
                                     'search_rest'  '00singer':1 '1971':4,5 'eos':3,7,9 'ifs':6 'pl':11 'sced':12 'set':8,10 'songwriter':2
                                    'search_combo'  '00singer':10 '1971':13,14 'bowie':4B 'david':3B 'eos':12,16,18 'frightening':2A 'ifs':15 'lightning':1A 'man':6C 'pl':20 'sced':21 'set':17,19 'sold':8C 'songwriter':11 'the':5C 'who':7C 'world':9C
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1990
                                     'discogstags'  ['glam', 'blues rock', 'alternative rock', 'rock']

============================== file details ==============================
                                           'mtime'  1636400843.1416872  (2021-11-08 20:47:23)
                             'size'  3645142