======================== unified (from filesystem) ========================
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                                        'duration'  '238'
                                          'artist'  'Etta James'
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                                           'title'  'These Foolish Things (Remind Me of You)'
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                                     'tracknumber'  '15'
                                      'tracktotal'  '22'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
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                                             'key'  '4B'
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======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '130.903'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TCOP' (Copyright message)                          '℗ 1993 UMG Recordings, Inc.'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993-06-08'
'TIT2' (Title/songname/content description)         'These Foolish Things (Remind Me of You)'
'TKEY' (Initial key)                                '4B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Etta James'
'TPE2' (Band/orchestra/accompaniment)               'Etta James'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'MCA Records'
'TRCK' (Track number/Position in set)               '15/22'
'TSO2'                                              'James, Etta'
'TSOP' (Performer sort order)                       'James, Etta'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
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'TXXX:discogstags'                                  ['jazz', 'funk / soul']
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'TXXX:lastfmtags'                                   ['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']
'TXXX:major_brand'                                  'M4A '
'TXXX:media_type'                                   '1'
'TXXX:minor_version'                                '0'
'TXXX:purchase_date'                                '2013-09-15 21:11:56'
'TXXX:q-bass'                                       '2'
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'TXXX:q-vocals'                                     '4'
'TXXX:rating'                                       '0'
'TXXX:replaygain_track_gain'                        '+2.17 dB'
'TXXX:replaygain_track_peak'                        '0.482783'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Essential Etta James - CD 1/1-15 These Foolish Things (Remind Me of You).mp3
                                         'working'  None
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                                    'duration_sec'  238
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  9562831
                                           'mtime'  1620528694
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                                        'rest_str'   00blues jazz exotica oldies country CD 1 1 15 prerock jb jazz vocal
                                      'tag_artist'  Etta James
                                     'tag_release'  The Essential Etta James
                                       'tag_title'  These Foolish Things (Remind Me of You)
                                             'bpm'  130.903
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                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  1993
                                     'discogstags'  ['jazz', 'funk / soul']

============================== file details ==============================
                                           'mtime'  1620528693.6781197  (2021-05-09 04:51:33)
                             'size'  9562831