======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '171'
                                          'artist'  'The Specials'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Specials - A Message to You, Rudie'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-HHRNBTT-2', 'Q-LOCALNESS-3', "
 "'Q-OLDST-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-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'reggae', 'two tone', 'ska', 'punk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-ska'
                                             'bpm'  '102.6'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '102.6'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-ska'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Specials - A Message to You, Rudie'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Specials'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['80s', 'reggae', 'two tone', 'ska', 'punk']
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.35 dB'
'TXXX:replaygain_track_peak'                        '0.618215'

========================== row from database ==========================
                                              'id'  1383165
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/The Specials - Specials/Specials - A Message to You, Rudie.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  171
                                           'genre'  loc-style-reggae or dub or ska or dancehall-ska
                                        'filesize'  2753980
                                           'mtime'  1620522513
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub loc style reggae or dub or ska or dancehall ska
                                      'tag_artist'  The Specials
                                     'tag_release'  None
                                       'tag_title'  Specials - A Message to You, Rudie
                                             'bpm'  102.6
                                    'search_title'  'a':2 'message':3 'rudie':7 'specials':1 'to':4 'you':5,6
                                   'search_artist'  'specials':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00reggae':1 'dancehall':8 'dub':2 'loc':3 'or':6 'reggae':5 'ska':7 'style':4
                                    'search_combo'  '00reggae':10 'a':2A 'dancehall':17 'dub':11 'loc':12 'message':3A 'or':15 'reggae':14 'rudie':7A 'ska':16 'specials':1A,9B 'style':13 'the':8B 'to':4A 'you':5A,6A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', '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'  ['80s', 'reggae', 'two tone', 'ska', 'punk']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620522513.375734  (2021-05-09 03:08:33)
                             'size'  2753980