======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '245'
                                          'artist'  'Postmen'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-HHRNBTT-3', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['reggae', 'hip hop', 'rap', 'dutch']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-unsorted'
                                             'bpm'  '120.256'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'D:\\Program Files\\Brava\\Music'
'COMM:MusicMatch_Path:XXX'                          'D:\\Program Files\\Brava\\MusicMatch Jukebox\\Music\\2F965AF-08A.mp3'
'COMM:MusicMatch_Serial:XXX'                        '2F965AF'
'TBPM' (BPM (beats per minute))                     '120.256'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-unsorted'
'TKEY' (Initial key)                                '7A'
'TLEN' (Length)                                     '245000'
'TPE1' (Lead performer(s)/Soloist(s))               'Postmen'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['reggae', 'hip hop', 'rap', 'dutch']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.71 dB'
'TXXX:replaygain_track_peak'                        '0.566423'
'TXXX:title'                                        ['U Wait', 'Track 8']

========================== row from database ==========================
                                              'id'  1352368
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Postmen - U Wait.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  245
                                           'genre'  loc-style-reggae or dub or ska or dancehall-unsorted
                                        'filesize'  3934208
                                           'mtime'  1620572946
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] U Wait loc style reggae or dub or ska or dancehall unsorted
                                      'tag_artist'  Postmen
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  120.256
                                    'search_title'  None
                                   'search_artist'  'postmen':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'dancehall':15 'dub':13 'files':5,6 'loc':9 'loose':3,4 'or':12 'reggae':11 'ska':14 'style':10 'u':7 'unsorted':2 'wait':8
                                    'search_combo'  '00poprockelectronic':2 'dancehall':16 'dub':14 'files':6,7 'loc':10 'loose':4,5 'or':13 'postmen':1B 'reggae':12 'ska':15 'style':11 'u':8 'unsorted':3 'wait':9
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'hip hop', 'rap', 'dutch']
                                        'tag_date'  
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620572945.9359517  (2021-05-09 17:09:05)
                             'size'  3934208