======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '210'
                                          'artist'  'Cab Calloway'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "There's A Cabin In The Cotton"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'blues', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '109.3'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '109.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1933-12-18'
'TIT2' (Title/songname/content description)         "There's A Cabin In The Cotton"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '210000'
'TPE1' (Lead performer(s)/Soloist(s))               'Cab Calloway'
'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'                                   ['big band', 'jazz', 'blues', 'oldies', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.66 dB'
'TXXX:replaygain_track_peak'                        '0.542867'

========================== row from database ==========================
                                              'id'  1498619
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/Cab Calloway - There_s A Cabin In The Cotton 18-12-1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  210
                                           'genre'  prerock-swing
                                        'filesize'  4246406
                                           'mtime'  1620560215
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 There_s 18 12 1933 prerock swing
                                      'tag_artist'  Cab Calloway
                                     'tag_release'  None
                                       'tag_title'  There's A Cabin In The Cotton
                                             'bpm'  109.3
                                    'search_title'  'a':4 'cabin':5 'cotton':8 'in':6 's':2 'the':7 'there':1 'theres':3
                                   'search_artist'  'cab':1 'calloway':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '18':9 '1933':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 's':8 'swing':11 'there':7
                                    'search_combo'  '00oldiepop':15 '18':19 '1933':16 'a':4A 'cab':9B 'cabin':5A 'calloway':10B 'cotton':8A 'country':14 'exotica':12 'in':6A 'jazz':11 'oldies':13 'prerock':20 's':2A,18 'swing':21 'the':7A 'there':1A,17 'theres':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['big band', 'jazz', 'blues', 'oldies', 'swing']
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560214.7042553  (2021-05-09 13:36:54)
                             'size'  4246406