======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '175'
                                          'artist'  'Mahalia Jackson'
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                                           'title'  'In The Summer Of His Years'
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                                      'lastfmtags'  "['gospel', 'jazz', 'female vocalists', 'soul']"
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                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  ''
                                            'date'  '1963'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '91.062'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '91.062'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1963'
'TIT2' (Title/songname/content description)         'In The Summer Of His Years'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mahalia Jackson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '028'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['gospel', 'jazz', 'female vocalists', 'soul']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.662304'

========================== row from database ==========================
                                              'id'  984376
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Bubbling under 5 (11-09-63)/028 Mahalia Jackson - In the summer of his years.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  175
                                           'genre'  prerock-unsorted
                                        'filesize'  2803083
                                           'mtime'  1622760178
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country under (11 09 63) 028 the summer of his years prerock unsorted
                                      'tag_artist'  Mahalia Jackson
                                     'tag_release'  Bubbling Under 5
                                       'tag_title'  In The Summer Of His Years
                                             'bpm'  91.062
                                    'search_title'  'his':5 'in':1 'of':4 'summer':3 'the':2 'years':6
                                   'search_artist'  'jackson':2 'mahalia':1
                                  'search_release'  '5':3 'bubbling':1 'under':2
                                     'search_rest'  '11':6,7 '63':8,9 'country':4 'exotica':2 'his':13 'jazz':1 'of':12 'oldies':3 'prerock':15 'summer':11 'the':10 'under':5 'unsorted':16 'years':14
                                    'search_combo'  '11':17,18 '5':11C '63':19,20 'bubbling':9C 'country':15 'exotica':13 'his':5A,24 'in':1A 'jackson':8B 'jazz':12 'mahalia':7B 'of':4A,23 'oldies':14 'prerock':26 'summer':3A,22 'the':2A,21 'under':10C,16 'unsorted':27 'years':6A,25
                                    'tag_tracknum'  28
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['gospel', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  1963
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622760178.150465  (2021-06-04 00:42:58)
                             'size'  2803083