======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '99'
                                          'artist'  'Siegfried Franz'
                                     'text_people'  ''
                                         'release'  'Chappell CAL 4005 - Music for Drama (Chappell International)'
                                           'title'  'Crime Action 14 Slow, tension, guitars'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'Q-LOCALNESS-2', "
 "'Q-UNU-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-3', 'q-other-3', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'germany', 'jazz', 'noir', 'library']"
                                     'discogstags'  "['stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'soundtrack-library'
                                             'bpm'  '94.283'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000000 00000210 00000A70'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A70 0000000000431E00 00000000 002479F6 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Chappell CAL 4005 - Music for Drama (Chappell International)'
'TBPM' (BPM (beats per minute))                     '94.283'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-library'
'TDRC' (Recording time)                             '1974'
'TENC' (Encoded by)                                 'iTunes v7.1.1'
'TIT2' (Title/songname/content description)         'Crime Action 14 Slow, tension, guitars'
'TKEY' (Initial key)                                '12A'
'TLEN' (Length)                                     '99000'
'TPE1' (Lead performer(s)/Soloist(s))               'Siegfried Franz'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'stage & screen'
'TXXX:lastfmtags'                                   ['soundtrack', 'germany', 'jazz', 'noir', 'library']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.44 dB'
'TXXX:replaygain_track_peak'                        '0.783139'

========================== row from database ==========================
                                              'id'  763569
                                            'path'  /data/Music/Bulk/0soundtrack/cal4005 - music for drama (chappell international)/14 Crime Action 14 - Slow, tension, guitars.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  99
                                           'genre'  soundtrack-library
                                        'filesize'  2397582
                                           'mtime'  1622758306
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack cal4005 music drama (chappell international) soundtrack library
                                      'tag_artist'  Siegfried Franz
                                     'tag_release'  Chappell CAL 4005 - Music for Drama (Chappell International)
                                       'tag_title'  Crime Action 14 Slow, tension, guitars
                                             'bpm'  94.283
                                    'search_title'  'action':2 'crime':1 'guitars':7 'slow':3,4 'tension':5,6
                                   'search_artist'  'franz':2 'siegfried':1
                                  'search_release'  '4005':3 'cal':2 'chappell':1,7 'drama':6 'for':5 'international':8,9 'music':4
                                     'search_rest'  '0soundtrack':1 'cal4005':2 'chappell':5,6 'drama':4 'international':7,8 'library':10 'music':3 'soundtrack':9
                                    'search_combo'  '0soundtrack':19 '4005':12C 'action':2A 'cal':11C 'cal4005':20 'chappell':10C,16C,23,24 'crime':1A 'drama':15C,22 'for':14C 'franz':9B 'guitars':7A 'international':17C,18C,25,26 'library':28 'music':13C,21 'siegfried':8B 'slow':3A,4A 'soundtrack':27 'tension':5A,6A
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'germany', 'jazz', 'noir', 'library']
                                        'tag_date'  1974
                                     'discogstags'  ['stage & screen']

============================== file details ==============================
                                           'mtime'  1622758305.5489435  (2021-06-04 00:11:45)
                             'size'  2397582