======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '141'
                                          'artist'  'The Raiders'
                                     'text_people'  ''
                                         'release'  'I Was A Teenage Brain Surgeon'
                                           'title'  'Raiders From Outer Space'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hardstyle', 'rockabilly', 'italian']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '17'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '98.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'I Was A Teenage Brain Surgeon'
'TBPM' (BPM (beats per minute))                     '98.0'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TIT2' (Title/songname/content description)         'Raiders From Outer Space'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Raiders'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '6/17'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['hardstyle', 'rockabilly', 'italian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.448475'

========================== row from database ==========================
                                              'id'  947524
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - I Was A Teenage Brain Surgeon/06 Raiders From Outer Space.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  141
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  3637325
                                           'mtime'  1620525474
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va 06 rock rockabilly or psychobilly
                                      'tag_artist'  The Raiders
                                     'tag_release'  I Was A Teenage Brain Surgeon
                                       'tag_title'  Raiders From Outer Space
                                             'bpm'  98.0
                                    'search_title'  'from':2 'outer':3 'raiders':1 'space':4
                                   'search_artist'  'raiders':2 'the':1
                                  'search_release'  'a':3 'brain':5 'i':1 'surgeon':6 'teenage':4 'was':2
                                     'search_rest'  'or':4 'psychobilly':5 'rock':2 'rockabilly':3 'va':1
                                    'search_combo'  'a':9C 'brain':11C 'from':2A 'i':7C 'or':16 'outer':3A 'psychobilly':17 'raiders':1A,6B 'rock':14 'rockabilly':15 'space':4A 'surgeon':12C 'teenage':10C 'the':5B 'va':13 'was':8C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hardstyle', 'rockabilly', 'italian']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620525474.0315833  (2021-05-09 03:57:54)
                             'size'  3637325