======================== unified (from filesystem) ========================
                                         'bitrate'  '201.29'
                                        'duration'  '198'
                                          'artist'  'Georg Friedrich Händel'
                                     'text_people'  ''
                                         'release'  '100 Masterpieces, Volume 2: The Top 10 of Classical Music 1731-1775'
                                           'title'  'Solomon: Arrival of the Queen of Sheba'
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 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
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                                      'lastfmtags'  "['composers', 'german', 'baroque', 'instrumental', 'classical']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '10'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '112'
                                             'key'  '7B'
                                        'acoustid'  '8b8e4534-944e-4f39-837b-860a6a28ee24'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '100 Masterpieces, Volume 2: The Top 10 of Classical Music 1731-1775'
'TBPM' (BPM (beats per minute))                     '112'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1991-03-19'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Solomon: Arrival of the Queen of Sheba'
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Georg Friedrich Händel'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'LaserLight Digital'
'TRCK' (Track number/Position in set)               '7/10'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Handel, George Frideric'
'TXXX:Acoustid Id'                                  '8b8e4534-944e-4f39-837b-860a6a28ee24'
'TXXX:Artists'                                      'Georg Friedrich Händel'
'TXXX:BARCODE'                                      '018111567725'
'TXXX:CATALOGNUMBER'                                '15 677'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'e34d6384-bd41-4d31-ada8-1b0fce4d1366'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '27870d47-bb98-42d1-bf2b-c7e972e6befc'
'TXXX:MusicBrainz Release Group Id'                 '183e8093-bb81-4c19-aac7-3b7235888eac'
'TXXX:MusicBrainz Release Track Id'                 '47f271be-5c4c-37a0-9a7d-27f0327ecf4d'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['composers', 'german', 'baroque', 'instrumental', 'classical']
'TXXX:originalyear'                                 '1991'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.72 dB'
'TXXX:replaygain_track_peak'                        '0.843196'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'85fe927f-fa40-4485-9ad7-c38377a02070')

========================== row from database ==========================
                                              'id'  1500282
                                            'path'  /data/Music/Bulk/00instruments-classical/The Top 100 Masterpieces of Classical Music 1685-1928/Disc 2 - 1731-1775/07 - 1749 Handel , Arrival of the Queen of Sheba (from _Solomon_).mp3
                                         'working'  None
                                         'bitrate'  201
                                    'duration_sec'  198
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  5086537
                                           'mtime'  1620561817
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 1685 1928 Disc 07 1749 Handel (from _Solomon_) prerock classical classical instruments
                                      'tag_artist'  Georg Friedrich Händel
                                     'tag_release'  100 Masterpieces, Volume 2: The Top 10 of Classical Music 1731-1775
                                       'tag_title'  Solomon: Arrival of the Queen of Sheba
                                             'bpm'  112.0
                                    'search_title'  'arrival':3 'of':4 'queen':6 'sheba':7 'solomon':1,2 'the':5
                                   'search_artist'  'friedrich':2 'georg':1 'handel':3,4
                                  'search_release'  '100':1 '1731':12 '17311775':14 '1775':13 '2':5,6 'classical':10 'masterpieces':2,3 'music':11 'of':9 'the':7 'top':8 'volume':4
                                     'search_rest'  '00instruments':1 '1685':3 '1749':6 '1928':4 'classical':2 'disc':5 'from':8,9 'handel':7 'instruments':13 'prerock':12 'solomon':10,11
                                    'search_combo'  '00instruments':26 '100':12C '1685':28 '1731':23C '17311775':25C '1749':31 '1775':24C '1928':29 '2':16C,17C 'arrival':3A 'classical':21C,27 'disc':30 'friedrich':9B 'from':33,34 'georg':8B 'handel':10B,11B,32 'instruments':38 'masterpieces':13C,14C 'music':22C 'of':4A,20C 'prerock':37 'queen':6A 'sheba':7A 'solomon':1A,2A,35,36 'the':5A,18C 'top':19C 'volume':15C
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['composers', 'german', 'baroque', 'instrumental', 'classical']
                                        'tag_date'  1991
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1620561817.364305  (2021-05-09 14:03:37)
                             'size'  5086537