======================== unified (from filesystem) ========================
                                         'bitrate'  '169.399'
                                        'duration'  '184'
                                          'artist'  'Marlene Dietrich'
                                     'text_people'  ''
                                         'release'  'Marlene Dietrich - Best of'
                                           'title'  'Leben ohne Liebe kannst du nicht'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['german', 'cabaret', 'female vocalists', 'oldies', 'deutsch']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '12'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'prerock-cabaret'
                                             'bpm'  '122.7'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'AB09D10C'
'TALB' (Album/Movie/Show title)                     'Marlene Dietrich - Best of'
'TBPM' (BPM (beats per minute))                     '122.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-cabaret'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'Leben ohne Liebe kannst du nicht'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Marlene Dietrich'
'TRCK' (Track number/Position in set)               '11/12'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 3, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['german', 'cabaret', 'female vocalists', 'oldies', 'deutsch']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.25 dB'
'TXXX:replaygain_track_peak'                        '0.598703'

========================== row from database ==========================
                                              'id'  1214107
                                            'path'  /data/Music/Bulk/00instruments-classical/Marlene Dietrich/Marlene Dietrich - Best of/Marlene Dietrich - 11 - Leben ohne Liebe kannst du nicht.mp3
                                         'working'  None
                                         'bitrate'  169
                                    'duration_sec'  184
                                           'genre'  prerock-cabaret
                                        'filesize'  3915966
                                           'mtime'  1620561644
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 11 prerock cabaret
                                      'tag_artist'  Marlene Dietrich
                                     'tag_release'  Marlene Dietrich - Best of
                                       'tag_title'  Leben ohne Liebe kannst du nicht
                                             'bpm'  122.7
                                    'search_title'  'du':5 'kannst':4 'leben':1 'liebe':3 'nicht':6 'ohne':2
                                   'search_artist'  'dietrich':2 'marlene':1
                                  'search_release'  'best':3 'dietrich':2 'marlene':1 'of':4
                                     'search_rest'  '00instruments':1 'cabaret':4 'classical':2 'prerock':3
                                    'search_combo'  '00instruments':13 'best':11C 'cabaret':16 'classical':14 'dietrich':8B,10C 'du':5A 'kannst':4A 'leben':1A 'liebe':3A 'marlene':7B,9C 'nicht':6A 'of':12C 'ohne':2A 'prerock':15
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['german', 'cabaret', 'female vocalists', 'oldies', 'deutsch']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561643.6479275  (2021-05-09 14:00:43)
                             'size'  3915966