======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '146'
                                          'artist'  'Maxence Cyrin'
                                     'text_people'  ''
                                         'release'  'Modern Rhapsodies'
                                           'title'  'Anasthasia'
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 "'Q-PIANO-4', 'q-chart-2', 'q-drums-3', 'q-other-1', 'q-vocals-1', "
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                                      'lastfmtags'  ("['fip', 'neo classical', 'modern classical', 'instrumental', 'ambient', "
 "'piano']")
                                     'discogstags'  "['electronic', 'modern classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '14'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments;set-cover or covered'
                                             'bpm'  '137.5'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '137.5'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-classical or classical instruments', 'set-cover or covered']
'TDOR' (Original release time)                      '2005'
'TDRC' (Recording time)                             '2005-10-24'
'TIT2' (Title/songname/content description)         'Anasthasia'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Maxence Cyrin'
'TPE2' (Band/orchestra/accompaniment)               'Maxence Cyrin'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'F Communications'
'TRCK' (Track number/Position in set)               '11/14'
'TSO2'                                              'Cyrin, Maxence'
'TSOP' (Performer sort order)                       'Cyrin, Maxence'
'TSRC' (ISRC (international standard recording code))  'FRV220502170'
'TXXX:ASIN'                                         'B000BQORES'
'TXXX:BARCODE'                                      '5413356090321'
'TXXX:CATALOGNUMBER'                                'F 236 CD'
'TXXX:MusicBrainz Album Artist Id'                  '7947dab4-4274-46f4-bc11-135561c110b7'
'TXXX:MusicBrainz Album Id'                         '80ad6ff0-b0ce-4104-a48c-4b4cbe81c68b'
'TXXX:MusicBrainz Album Release Country'            'FR'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '7947dab4-4274-46f4-bc11-135561c110b7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'modern classical']
'TXXX:lastfmtags'                                   ['fip', 'neo classical', 'modern classical', 'instrumental', 'ambient', 'piano']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.599378'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'428bd36f-a88f-4077-8945-5dcd65df55ce')

========================== row from database ==========================
                                              'id'  1117211
                                            'path'  /data/Music/Bulk/00instruments-classical/Maxence Cyrin - modern rhapsodies/11 anasthasia (original by t99).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  146
                                           'genre'  prerock-classical or classical instruments;set-cover or covered
                                        'filesize'  3513708
                                           'mtime'  1636913589
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical modern rhapsodies 11 anasthasia (original by t99) prerock classical or classical instruments;set cover or covered
                                      'tag_artist'  Maxence Cyrin
                                     'tag_release'  Modern Rhapsodies
                                       'tag_title'  Anasthasia
                                             'bpm'  137.5
                                    'search_title'  'anasthasia':1
                                   'search_artist'  'cyrin':2 'maxence':1
                                  'search_release'  'modern':1 'rhapsodies':2
                                     'search_rest'  '00instruments':1 'anasthasia':5 'by':8 'classical':2 'cover':17 'covered':18 'instruments':13,15 'modern':3 'or':12 'original':6,7 'prerock':11 'rhapsodies':4 'set':14,16 't99':9,10
                                    'search_combo'  '00instruments':6 'anasthasia':1A,10 'by':13 'classical':7 'cover':22 'covered':23 'cyrin':3B 'instruments':18,20 'maxence':2B 'modern':4C,8 'or':17 'original':11,12 'prerock':16 'rhapsodies':5C,9 'set':19,21 't99':14,15
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['fip', 'neo classical', 'modern classical', 'instrumental', 'ambient', 'piano']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic', 'modern classical']

============================== file details ==============================
                                           'mtime'  1636913589.1316607  (2021-11-14 19:13:09)
                             'size'  3513708