======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '181'
                                          'artist'  "Alexander's Accordions"
                                     'text_people'  ''
                                         'release'  'Regal Zonophone MR 1050'
                                           'title'  'Missouri Waltz'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '121.994'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Regal Zonophone MR 1050'
'TBPM' (BPM (beats per minute))                     '121.994'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1933'
'TIT2' (Title/songname/content description)         'Missouri Waltz'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               "Alexander's Accordions"
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'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'                        '+1.42 dB'
'TXXX:replaygain_track_peak'                        '0.551672'

========================== row from database ==========================
                                              'id'  1497765
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/Alexander_s Accordions - Missouri Waltz -10-1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  181
                                           'genre'  prerock-unsorted
                                        'filesize'  3634994
                                           'mtime'  1621697953
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 Alexander_s 1933 prerock unsorted
                                      'tag_artist'  Alexander's Accordions
                                     'tag_release'  Regal Zonophone MR 1050
                                       'tag_title'  Missouri Waltz
                                             'bpm'  121.994
                                    'search_title'  'missouri':1 'waltz':2
                                   'search_artist'  'accordions':4 'alexander':1 'alexanders':3 's':2
                                  'search_release'  '1050':4 'mr':3 'regal':1 'zonophone':2
                                     'search_rest'  '00oldiepop':5 '1933':6 'alexander':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 's':8 'unsorted':10
                                    'search_combo'  '00oldiepop':15 '1050':10C '1933':16 'accordions':6B 'alexander':3B,17 'alexanders':5B 'country':14 'exotica':12 'jazz':11 'missouri':1A 'mr':9C 'oldies':13 'prerock':19 'regal':7C 's':4B,18 'unsorted':20 'waltz':2A 'zonophone':8C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697953.2043502  (2021-05-22 17:39:13)
                             'size'  3634994