======================== unified (from filesystem) ========================
                                         'bitrate'  '127.985'
                                        'duration'  '228'
                                          'artist'  'Squirrel Nut Zippers'
                                     'text_people'  ''
                                         'release'  'Hot'
                                           'title'  'Bad Businessman'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['retro swing', 'alternative', 'jazz', 'retro', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '12'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'prerock-jb'
                                             'bpm'  '111.272'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Hot'
'TBPM' (BPM (beats per minute))                     '111.272'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb'
'TDRC' (Recording time)                             '1996-06-04'
'TIT2' (Title/songname/content description)         'Bad Businessman'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Squirrel Nut Zippers'
'TPE2' (Band/orchestra/accompaniment)               'Squirrel Nut Zippers'
'TPUB' (Publisher)                                  'Mammoth Records'
'TRCK' (Track number/Position in set)               '9/12'
'TSOP' (Performer sort order)                       'Squirrel Nut Zippers'
'TXXX:ALBUMARTISTSORT'                              'Squirrel Nut Zippers'
'TXXX:ASIN'                                         'B000004ATE'
'TXXX:BARCODE'                                      '035498013720'
'TXXX:CATALOGNUMBER'                                'MR0137-2'
'TXXX:MusicBrainz Album Artist Id'                  '31810c40-932a-4f2d-8cfd-17849844e2a6'
'TXXX:MusicBrainz Album Id'                         '70fc4df9-1a86-4357-aac7-0694d4248aed'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '31810c40-932a-4f2d-8cfd-17849844e2a6'
'TXXX:MusicIP PUID'                                 '8a25e596-4c6c-4525-fcf6-2d5ee3000688'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:added_timestamp'                              '128930990202923527'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['retro swing', 'alternative', 'jazz', 'retro', 'swing']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.61 dB'
'TXXX:replaygain_track_peak'                        '0.631656'

========================== row from database ==========================
                                              'id'  1318698
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Squirrel Nut Zippers-Hot-09-Bad Businessman.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  228
                                           'genre'  prerock-jb
                                        'filesize'  3654104
                                           'mtime'  1630249722
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 09 prerock jb
                                      'tag_artist'  Squirrel Nut Zippers
                                     'tag_release'  Hot
                                       'tag_title'  Bad Businessman
                                             'bpm'  111.272
                                    'search_title'  'bad':1 'businessman':2
                                   'search_artist'  'nut':2 'squirrel':1 'zippers':3
                                  'search_release'  'hot':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'jb':8 'loose':3,4 'prerock':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'bad':1A 'businessman':2A 'files':11,12 'hot':6C 'jb':14 'loose':9,10 'nut':4B 'prerock':13 'squirrel':3B 'unsorted':8 'zippers':5B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['retro swing', 'alternative', 'jazz', 'retro', 'swing']
                                        'tag_date'  1996
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1630249721.5115073  (2021-08-29 17:08:41)
                             'size'  3654104