======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '487'
                                          'artist'  'The Hot 8 Brass Band'
                                     'text_people'  ''
                                         'release'  'New Orleans JazzFest 2006'
                                           'title'  'Fire'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-JZFKS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['new orleans', 'brass', 'jazz', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '08'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '104.552'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000EB2 00000BA1 00004D3D'
'COMM:iTunNORM:eng'                                 (' 00000EB2 00000BA1 00004D3D 00003A3E 00043348 0006BACF 00008000 00008000 '
 '00009804 000262CB')
'TALB' (Album/Movie/Show title)                     'New Orleans JazzFest 2006'
'TBPM' (BPM (beats per minute))                     '104.552'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Fire'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Hot 8 Brass Band'
'TRCK' (Track number/Position in set)               '08'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new orleans', 'brass', 'jazz', 'funk']
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.51 dB'
'TXXX:replaygain_track_peak'                        '0.522068'

========================== row from database ==========================
                                              'id'  1491516
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/08 - fire238.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  487
                                           'genre'  funk or soul
                                        'filesize'  15597724
                                           'mtime'  1628357773
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch 08 fire238 funk or soul
                                      'tag_artist'  The Hot 8 Brass Band
                                     'tag_release'  New Orleans JazzFest 2006
                                       'tag_title'  Fire
                                             'bpm'  104.552
                                    'search_title'  'fire':1
                                   'search_artist'  '8':3 'band':5 'brass':4 'hot':2 'the':1
                                  'search_release'  '2006':4 'fest':6 'jazz':5 'jazzfest':3 'new':1 'orleans':2
                                     'search_rest'  '00dutch':4 '00mid':1 'europe':3 'fire238':5 'funk':6 'north':2 'or':7 'soul':8
                                    'search_combo'  '00dutch':16 '00mid':13 '2006':10C '8':4B 'band':6B 'brass':5B 'europe':15 'fest':12C 'fire':1A 'fire238':17 'funk':18 'hot':3B 'jazz':11C 'jazzfest':9C 'new':7C 'north':14 'or':19 'orleans':8C 'soul':20 'the':2B
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['new orleans', 'brass', 'jazz', 'funk']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357773.1809905  (2021-08-07 19:36:13)
                             'size'  15597724