======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '48'
                                          'artist'  'Siegfried Franz'
                                     'text_people'  ''
                                         'release'  'Chappell CAL 4005 - Music for Drama (Chappell International)'
                                           'title'  'Crime Action 06 Tension, brass, medium-tempo'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'Q-LOCALNESS-2', "
 "'Q-UNU-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', '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'  "['soundtrack', 'germany', 'jazz', 'noir', 'library']"
                                     'discogstags'  "['stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '06'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'soundtrack-library'
                                             'bpm'  '127.605'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000000 00000210 00000A1C'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A1C 00000000002093D4 00000000 0011ADB7 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Chappell CAL 4005 - Music for Drama (Chappell International)'
'TBPM' (BPM (beats per minute))                     '127.605'
'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 06 Tension, brass, medium-tempo'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '48000'
'TPE1' (Lead performer(s)/Soloist(s))               'Siegfried Franz'
'TRCK' (Track number/Position in set)               '06'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'stage & screen'
'TXXX:lastfmtags'                                   ['soundtrack', 'germany', 'jazz', 'noir', 'library']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'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'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.38 dB'
'TXXX:replaygain_track_peak'                        '0.869559'

========================== row from database ==========================
                                              'id'  770886
                                            'path'  /data/Music/Bulk/0soundtrack/cal4005 - music for drama (chappell international)/06 Crime Action 06 - Tension, brass, medium-tempo.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  48
                                           'genre'  soundtrack-library
                                        'filesize'  1165647
                                           'mtime'  1622758305
                                   '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 06 Tension, brass, medium-tempo
                                             'bpm'  127.605
                                    'search_title'  'action':2 'brass':5,6 'crime':1 'medium':7 'mediumtempo':9 'tempo':8 'tension':3,4
                                   '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':21 '4005':14C 'action':2A 'brass':5A,6A 'cal':13C 'cal4005':22 'chappell':12C,18C,25,26 'crime':1A 'drama':17C,24 'for':16C 'franz':11B 'international':19C,20C,27,28 'library':30 'medium':7A 'mediumtempo':9A 'music':15C,23 'siegfried':10B 'soundtrack':29 'tempo':8A 'tension':3A,4A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'germany', 'jazz', 'noir', 'library']
                                        'tag_date'  1974
                                     'discogstags'  ['stage & screen']

============================== file details ==============================
                                           'mtime'  1622758305.456325  (2021-06-04 00:11:45)
                             'size'  1165647