======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '247'
                                          'artist'  'Stock, Hausen & Walkman'
                                     'text_people'  ''
                                         'release'  'Ventilating Deer'
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                                      'lastfmtags'  "['electronica', 'avant garde', 'electronic', 'experimental', 'sound collage']"
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '13'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-collage;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '103.536'
                                             'key'  '7A'
                                        'acoustid'  '4430a8f9-5c75-47d8-a618-1b79c25dbd2d'
rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental-collage', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Melons'
'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Stock, Hausen & Walkman'
'TPE2' (Band/orchestra/accompaniment)               'Stock, Hausen & Walkman'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Hot Air'
'TRCK' (Track number/Position in set)               '13/13'
'TSO2'                                              'Stock, Hausen & Walkman'
'TSOP' (Performer sort order)                       'Stock, Hausen & Walkman'
'TSRC' (ISRC (international standard recording code))  'QRM VDCD 001'
'TXXX:ASIN'                                         'B00004VWWE'
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'TXXX:CATALOGNUMBER'                                'QRM VDCD 001'
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'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'f0abb8d6-fcf7-4d1e-8eae-1e615e266a5d'
'TXXX:MusicBrainz Release Group Id'                 '50d705eb-ec80-35cf-bf10-ecfd4ae92271'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
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'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['electronica', 'avant garde', 'electronic', 'experimental', 'sound collage']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.16 dB'
'TXXX:replaygain_track_peak'                        '0.541260'
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========================== row from database ==========================
                                              'id'  244007
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/0experimental_sound_projects/Stock, Hausen & Walkman/Stock, Hausen & Walkman - 1999 - Ventilating Deer/13. Stock, Hausen & Walkman - Melons.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  247
                                           'genre'  electronic-experimental-collage;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  6009952
                                           'mtime'  1623408507
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 0experimental_sound_projects 1999 13. electronic experimental collage;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Stock, Hausen & Walkman
                                     'tag_release'  Ventilating Deer
                                       'tag_title'  Melons
                                             'bpm'  103.536
                                    'search_title'  'melons':1
                                   'search_artist'  'hausen':3 'stock':1,2 'walkman':4
                                  'search_release'  'deer':2 'ventilating':1
                                     'search_rest'  '0experimental':1 '13':5,6 '1999':4 'collage':9,11 'electronic':7 'experimental':8 'mor':18 'pl':13 'projects':3 'set':10,12,15,17 'shirleyspinoza':14,16 'sound':2
                                    'search_combo'  '0experimental':8 '13':12,13 '1999':11 'collage':16,18 'deer':7C 'electronic':14 'experimental':15 'hausen':4B 'melons':1A 'mor':25 'pl':20 'projects':10 'set':17,19,22,24 'shirleyspinoza':21,23 'sound':9 'stock':2B,3B 'ventilating':6C 'walkman':5B
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'avant garde', 'electronic', 'experimental', 'sound collage']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1623408506.8037007  (2021-06-11 12:48:26)
                             'size'  6009952