======================== unified (from filesystem) ========================
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                                        'duration'  '302'
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '13'
                                            'date'  '1996'
                                        'comments'  ''
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rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDOR' (Original release time)                      '1996'
'TDRC' (Recording time)                             '1996-11-19'
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'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'DJ Shadow'
'TPE2' (Band/orchestra/accompaniment)               'DJ Shadow'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'FFRR/Mo Wax'
'TRCK' (Track number/Position in set)               '11/13'
'TSO2'                                              'Shadow, DJ'
'TSOP' (Performer sort order)                       'Shadow, DJ'
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'TXXX:lastfmtags'                                   ['electronica', 'electronic', 'trip hop', 'hip hop', 'turntablism']
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'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
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'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00poprockelectronic/DJ Shadow/DJ.Shadow.Endtroducing.1998/11 - DJ Shadow - Midnight In A Perfect World.mp3
                                         'working'  None
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                                    'duration_sec'  302
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  7547469
                                           'mtime'  1620568766
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                                        'rest_str'   00poprockelectronic DJ.Shadow.Endtroducing.1998 11 In A hip hop rnb rap turntablism
                                      'tag_artist'  DJ Shadow
                                     'tag_release'  Endtroducing.....
                                       'tag_title'  Midnight in a Perfect World
                                             'bpm'  105.422
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                                   'search_artist'  'dj':1 'shadow':2
                                  'search_release'  'endtroducing':1,2
                                     'search_rest'  '00poprockelectronic':1 '1998':5 'a':8 'dj':2 'djshadowendtroducing1998':6 'endtroducing':4 'hip':9 'hop':10 'in':7 'rap':12 'rnb':11 'shadow':3 'turntablism':13
                                    'search_combo'  '00poprockelectronic':10 '1998':14 'a':3A,17 'dj':6B,11 'djshadowendtroducing1998':15 'endtroducing':8C,9C,13 'hip':18 'hop':19 'in':2A,16 'midnight':1A 'perfect':4A 'rap':21 'rnb':20 'shadow':7B,12 'turntablism':22 'world':5A
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electronic', 'trip hop', 'hip hop', 'turntablism']
                                        'tag_date'  1996
                                     'discogstags'  ['electronic', 'hip hop', 'instrumental', 'downtempo', 'cut-up/dj', 'trip hop']

============================== file details ==============================
                                           'mtime'  1620568765.5569344  (2021-05-09 15:59:25)
                             'size'  7547469