======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '205'
                                          'artist'  'Benny Goodman'
                                     'text_people'  ''
                                         'release'  'King Of Swing'
                                           'title'  'St. Louis Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'clarinet', 'oldies', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '10'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-big band'
                                             'bpm'  '130.650'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000251 00000251 00001A31'
'COMM:iTunNORM:eng'                                 (' 00000251 00000251 00001A31 000019F5 00027790 00027790 000057E6 000057A8 '
 '000295C4 000295C4')
'POPM:'                                             POPM(email='', rating=0, count=0)
'TALB' (Album/Movie/Show title)                     'King Of Swing'
'TBPM' (BPM (beats per minute))                     '130.650'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-big band'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'St. Louis Blues'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Benny Goodman'
'TPE2' (Band/orchestra/accompaniment)               'Benny Goodman'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '5/10'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'clarinet', 'oldies', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                        '+0.94 dB'
'TXXX:replaygain_track_peak'                        '0.686723'

========================== row from database ==========================
                                              'id'  1294023
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/benny goodman - big band swing - - st louis blues.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  205
                                           'genre'  prerock-jb-jazz-o-big band
                                        'filesize'  8351405
                                           'mtime'  1620541269
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] benny goodman big band swing st louis blues prerock jb jazz big band
                                      'tag_artist'  Benny Goodman
                                     'tag_release'  King Of Swing
                                       'tag_title'  St. Louis Blues
                                             'bpm'  130.65
                                    'search_title'  'blues':4 'louis':3 'st':1,2
                                   'search_artist'  'benny':1 'goodman':2
                                  'search_release'  'king':1 'of':2 'swing':3
                                     'search_rest'  '00poprockelectronic':1 'band':10 'benny':7 'big':9 'blues':14 'files':5,6 'goodman':8 'jazz':17 'jb':16 'loose':3,4 'louis':13 'prerock':15 'st':12 'swing':11 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 'band':19 'benny':5B,16 'big':18 'blues':4A,23 'files':14,15 'goodman':6B,17 'jazz':26 'jb':25 'king':7C 'loose':12,13 'louis':3A,22 'of':8C 'prerock':24 'st':1A,2A,21 'swing':9C,20 'unsorted':11
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  6B
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'clarinet', 'oldies', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620541269.3304667  (2021-05-09 08:21:09)
                             'size'  8351405