======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '142'
                                          'artist'  'Jimmie Rodgers'
                                     'text_people'  ''
                                         'release'  'The Best of Jimmie Rodgers [Rhino]'
                                           'title'  'Kisses Sweeter Than Wine'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
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 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['classic country', 'americana', 'country', 'bluegrass', 'blues', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '031'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '84.000'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'The Best of Jimmie Rodgers [Rhino]'
'TBPM' (BPM (beats per minute))                     '84.000'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Kisses Sweeter Than Wine'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '142573'
'TPE1' (Lead performer(s)/Soloist(s))               'Jimmie Rodgers'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '031'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic country', 'americana', 'country', 'bluegrass', 'blues', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.18 dB'
'TXXX:replaygain_track_peak'                        '0.702970'

========================== row from database ==========================
                                              'id'  1440862
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-031 - Jimmie Rodgers - Kisses Sweeter Than Wine.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  142
                                           'genre'  prerock-unsorted
                                        'filesize'  5704708
                                           'mtime'  1621698313
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 031 prerock unsorted
                                      'tag_artist'  Jimmie Rodgers
                                     'tag_release'  The Best of Jimmie Rodgers [Rhino]
                                       'tag_title'  Kisses Sweeter Than Wine
                                             'bpm'  84.0
                                    'search_title'  'kisses':1 'sweeter':2 'than':3 'wine':4
                                   'search_artist'  'jimmie':1 'rodgers':2
                                  'search_release'  'best':2 'jimmie':4 'of':3 'rhino':6,7 'rodgers':5 'the':1
                                     'search_rest'  '00oldiepop':5 '1957':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':18 '1957':19 'best':8C 'country':17 'exotica':15 'jazz':14 'jimmie':5B,10C 'kisses':1A 'of':9C 'oldies':16 'prerock':20 'rhino':12C,13C 'rodgers':6B,11C 'sweeter':2A 'than':3A 'the':7C 'unsorted':21 'wine':4A
                                    'tag_tracknum'  31
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['classic country', 'americana', 'country', 'bluegrass', 'blues', 'folk']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698312.5513968  (2021-05-22 17:45:12)
                             'size'  5704708