======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '97'
                                          'artist'  'Entombed'
                                     'text_people'  ''
                                         'release'  'Wolverine Blues'
                                           'title'  'Wolverine Blues'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'metal', 'swedish death metal', 'death metal', 'death n roll']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '101.006'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PCNT' (Play counter)                               PCNT(count=0)
'TALB' (Album/Movie/Show title)                     'Wolverine Blues'
'TBPM' (BPM (beats per minute))                     '101.006'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Wolverine Blues'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '97000'
'TPE1' (Lead performer(s)/Soloist(s))               'Entombed'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['swedish', 'metal', 'swedish death metal', 'death metal', 'death n roll']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.45 dB'
'TXXX:replaygain_track_peak'                        '0.404792'

========================== row from database ==========================
                                              'id'  1308754
                                            'path'  /data/Music/Bulk/00poprockelectronic/swedish rock/Entombed - Wolverine Blues.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  97
                                           'genre'  eid-metal
                                        'filesize'  1572737
                                           'mtime'  1620301857
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic swedish rock eid metal
                                      'tag_artist'  Entombed
                                     'tag_release'  Wolverine Blues
                                       'tag_title'  Wolverine Blues
                                             'bpm'  101.006
                                    'search_title'  'blues':2 'wolverine':1
                                   'search_artist'  'entombed':1
                                  'search_release'  'blues':2 'wolverine':1
                                     'search_rest'  '00poprockelectronic':1 'eid':4 'metal':5 'rock':3 'swedish':2
                                    'search_combo'  '00poprockelectronic':6 'blues':2A,5C 'eid':9 'entombed':3B 'metal':10 'rock':8 'swedish':7 'wolverine':1A,4C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-2', 'q-other-3', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'metal', 'swedish death metal', 'death metal', 'death n roll']
                                        'tag_date'  1994
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301856.531076  (2021-05-06 13:50:56)
                             'size'  1572737