======================== unified (from filesystem) ========================
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                                        'duration'  '258'
                                          'artist'  'Teja Schmitz'
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                                      'lastfmtags'  ("['german', 'new wave', 'germany', 'ndw', 'die wahren perlen "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  '21'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-we-new wave or post punk'
                                             'bpm'  '88.8'
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rest: ''

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

'TALB' (Album/Movie/Show title)                     'A Tribute to Some Bizarre, Volume 2'
'TBPM' (BPM (beats per minute))                     '88.8'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-new wave or post punk'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Studieren'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD-R'
'TPE1' (Lead performer(s)/Soloist(s))               'Teja Schmitz'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'A Tribute to Some Bizarre'
'TRCK' (Track number/Position in set)               '20/21'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Teja Schmitz'
'TXXX:Artists'                                      'Teja Schmitz'
'TXXX:CATALOGNUMBER'                                'ATTSB 02'
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'TXXX:MusicBrainz Album Status'                     'bootleg'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '9c420e6e-390b-4163-806b-d3433268d037'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'experimental', 'minimal']
'TXXX:lastfmtags'                                   ['german',
 'new wave',
 'germany',
 'ndw',
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'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.573951'
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                                         'working'  None
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                                    'duration_sec'  258
                                           'genre'  electronic-we-new wave or post punk
                                        'filesize'  6196086
                                           'mtime'  1620516580
                                   'redo_metaread'  0
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                                      'tag_artist'  Teja Schmitz
                                     'tag_release'  A Tribute to Some Bizarre, Volume 2
                                       'tag_title'  Studieren
                                             'bpm'  88.8
                                    'search_title'  'studieren':1
                                   'search_artist'  'schmitz':2 'teja':1
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                                    'search_combo'  '192k':15,16 '2':11C '20':17 'a':4C 'bizarre':8C,9C 'electronic':21 'new':23 'or':25 'post':26 'punk':27 'schmitz':3B,19 'some':7C 'studieren':1A,20 'teja':2B,18 'to':6C,12 'tribute':5C 'vol':13,14 'volume':10C 'wave':24 'we':22
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['german', 'new wave', 'germany', 'ndw', 'die wahren perlen deutschsprachiger popmusik']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic', 'experimental', 'minimal']

============================== file details ==============================
                                           'mtime'  1620516580.0666347  (2021-05-09 01:29:40)
                             'size'  6196086