======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '134'
                                          'artist'  'Sam Sklair'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Zulu warrior'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['mark of the devil', 'avant garde', 'library', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '118.5'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '118.5'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1968'
'TIT2' (Title/songname/content description)         'Zulu warrior'
'TKEY' (Initial key)                                '8B'
'TLEN' (Length)                                     '134086'
'TPE1' (Lead performer(s)/Soloist(s))               'Sam Sklair'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['mark of the devil', 'avant garde', 'library', 'experimental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.37 dB'
'TXXX:replaygain_track_peak'                        '0.606483'

========================== row from database ==========================
                                              'id'  726268
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/sam sklair - gumboot dance (1968)/sam sklair_12_zulu warrior.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  134
                                           'genre'  electronic-experimental
                                        'filesize'  2147432
                                           'mtime'  1636917365
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm sam sklair gumboot dance (1968) sam sklair_12_zulu electronic experimental
                                      'tag_artist'  Sam Sklair
                                     'tag_release'  None
                                       'tag_title'  Zulu warrior
                                             'bpm'  118.5
                                    'search_title'  'warrior':2 'zulu':1
                                   'search_artist'  'sam':1 'sklair':2
                                  'search_release'  
                                     'search_rest'  '12':8 '1968':5,6 'dance':4 'electronic':10 'experimental':11 'gumboot':3 'sam':1 'sklair':2,7 'zulu':9
                                    'search_combo'  '12':12 '1968':9,10 'dance':8 'electronic':14 'experimental':15 'gumboot':7 'sam':3B,5 'sklair':4B,6,11 'warrior':2A 'zulu':1A,13
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['mark of the devil', 'avant garde', 'library', 'experimental']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636917364.6049623  (2021-11-14 20:16:04)
                             'size'  2147432