======================== unified (from filesystem) ========================
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                                        'duration'  '163'
                                          'artist'  'Tom Petty And The Heartbreakers'
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                                      'lastfmtags'  "['80s', 'rock', 'singer songwriter', 'folk', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '17'
                                            'date'  '2000'
                                        'comments'  ''
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                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '116.453'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-classic', 'set-pl-billboard']
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         "Don't Do Me Like That"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Petty And The Heartbreakers'
'TRCK' (Track number/Position in set)               '10/17'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'rock', 'singer songwriter', 'folk', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.478863'

========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Tom Petty And The Heartbreakers/Anthology - Through The Years Disk 1/Tom Petty and the Heartbreakers - Don_t Do Me Like That - 10.mp3
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                                    'duration_sec'  163
                                           'genre'  rock-cppex-classic;set-pl-billboard
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                                           'mtime'  1636038995
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                                       'tag_title'  Don't Do Me Like That
                                             'bpm'  116.453
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                                     'search_rest'  'and':2 'billboard':13 'classic':8,10 'classicprogpsy':1 'cppex':7 'don':4 'pl':12 'rock':6 'set':9,11 't':5 'the':3
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                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'rock', 'singer songwriter', 'folk', 'classic rock']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636038995.3868673  (2021-11-04 16:16:35)
                             'size'  2614291