======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '204'
                                          'artist'  'Tommy Dorsey Orch   '
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-JZFKS-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-2', 'q-other-4', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['jazz', 'swing', 'big band', 'trombone', '40s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '131.498'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TBPM' (BPM (beats per minute))                     '131.498'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TDRC' (Recording time)                             '1935'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tommy Dorsey Orch   '
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'big band', 'trombone', '40s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.62 dB'
'TXXX:replaygain_track_peak'                        '0.536202'

========================== row from database ==========================
                                              'id'  1523715
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/tommy dorsey - wade in the water.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  204
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  3292673
                                           'mtime'  1620527979
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection tommy dorsey wade in the water prerock jb jazz soft swing
                                      'tag_artist'  Tommy Dorsey Orch   
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  131.498
                                    'search_title'  None
                                   'search_artist'  'dorsey':2 'orch':3 'tommy':1
                                  'search_release'  
                                     'search_rest'  '30':5 'collection':7 'country':4 'dorsey':9 'exotica':2 'in':11 'jazz':1 'jb':15 'oldies':3 'prerock':14 's':6 'soft':16 'swing':17 'the':12 'tommy':8 'wade':10 'water':13
                                    'search_combo'  '30':8 'collection':10 'country':7 'dorsey':2B,12 'exotica':5 'in':14 'jazz':4 'jb':18 'oldies':6 'orch':3B 'prerock':17 's':9 'soft':19 'swing':20 'the':15 'tommy':1B,11 'wade':13 'water':16
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-piano-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'swing', 'big band', 'trombone', '40s']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527979.363233  (2021-05-09 04:39:39)
                             'size'  3292673