======================== unified (from filesystem) ========================
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                                        'duration'  '164'
                                          'artist'  'Rudi Wairata'
                                     'text_people'  ''
                                         'release'  'Cicodelico Obscure Gooves Vol. 30'
                                           'title'  'Whistling Guitar'
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                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '27'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '125.9'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '125.9'
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'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Whistling Guitar'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rudi Wairata'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '27'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf54.63.104'
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'TXXX:PeakValue'                                    '24225'
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'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
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'TXXX:replaygain_track_gain'                        '-0.13 dB'
'TXXX:replaygain_track_peak'                        '0.646039'

========================== row from database ==========================
                                              'id'  764925
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Cicodelico Obscure Gooves Vol. 30/27 Whistling Guitar.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  164
                                           'genre'  loc-unsorted
                                        'filesize'  3956675
                                           'mtime'  1622759242
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 27 loc unsorted
                                      'tag_artist'  Rudi Wairata
                                     'tag_release'  Cicodelico Obscure Gooves Vol. 30
                                       'tag_title'  Whistling Guitar
                                             'bpm'  125.9
                                    'search_title'  'guitar':2 'whistling':1
                                   'search_artist'  'rudi':1 'wairata':2
                                  'search_release'  '30':6 'cicodelico':1 'gooves':3 'obscure':2 'vol':4,5
                                     'search_rest'  '27':1 'loc':2 'unsorted':3
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                                    'tag_tracknum'  27
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1970
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1622759242.1053052  (2021-06-04 00:27:22)
                             'size'  3956675