======================== unified (from filesystem) ========================
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                                        'duration'  '82'
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                                      'lastfmtags'  "['electronic', 'funk', 'downtempo', 'nu jazz', 'chillout']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
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                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '98.4'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Music for Maniacs'
'TBPM' (BPM (beats per minute))                     '98.4'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Track 15'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Quantic'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
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'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
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'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronic', 'funk', 'downtempo', 'nu jazz', 'chillout']
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'TXXX:q-grit'                                       '2'
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'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.60 dB'
'TXXX:replaygain_track_peak'                        '0.501765'

========================== row from database ==========================
                                              'id'  1518656
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/music for maniacs/Gloria Lynne - If You Don_t Get It Yourself (Canyon).mp3
                                         'working'  None
                                         'bitrate'  203
                                    'duration_sec'  82
                                           'genre'  funk or soul
                                        'filesize'  2093056
                                           'mtime'  1628357635
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm music maniacs Gloria Lynne If You Don_t Get It Yourself (Canyon) funk soul
                                      'tag_artist'  Quantic
                                     'tag_release'  Music for Maniacs
                                       'tag_title'  Track 15
                                             'bpm'  98.4
                                    'search_title'  'track':1
                                   'search_artist'  'quantic':1
                                  'search_release'  'for':2 'maniacs':3 'music':1
                                     'search_rest'  'canyon':12,13 'don':7 'funk':14 'get':9 'gloria':3 'if':5 'it':10 'lynne':4 'maniacs':2 'music':1 'soul':15 't':8 'you':6 'yourself':11
                                    'search_combo'  'canyon':17,18 'don':12 'for':4C 'funk':19 'get':14 'gloria':8 'if':10 'it':15 'lynne':9 'maniacs':5C,7 'music':3C,6 'quantic':2B 'soul':20 't':13 'track':1A 'you':11 'yourself':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'funk', 'downtempo', 'nu jazz', 'chillout']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357635.3793437  (2021-08-07 19:33:55)
                             'size'  2093056