======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '272'
                                          'artist'  'OOMPH!'
                                     'text_people'  ''
                                         'release'  'Wahrheit oder Pflicht'
                                           'title'  'Wenn Du Weinst'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['industrial metal', 'german', 'industrial', 'metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-industrial'
                                             'bpm'  '139.9'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Wahrheit oder Pflicht'
'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-industrial'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Wenn Du Weinst'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'OOMPH!'
'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:lastfmtags'                                   ['industrial metal', 'german', 'industrial', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.63 dB'
'TXXX:replaygain_track_peak'                        '0.362841'

========================== row from database ==========================
                                              'id'  1398498
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Oomph!/Wahrheit oder Pflicht/OOMPH! - Wenn Du Weinst.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  272
                                           'genre'  eid-metal-industrial
                                        'filesize'  6550947
                                           'mtime'  1620311077
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Oomph! eid metal industrial
                                      'tag_artist'  OOMPH!
                                     'tag_release'  Wahrheit oder Pflicht
                                       'tag_title'  Wenn Du Weinst
                                             'bpm'  139.9
                                    'search_title'  'du':2 'weinst':3 'wenn':1
                                   'search_artist'  'oomph':1
                                  'search_release'  'oder':2 'pflicht':3 'wahrheit':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':4 'industrial':6 'metal':5 'oomph':3
                                    'search_combo'  '00dwimp':8 '00metal':9 'du':2A 'eid':11 'industrial':13 'metal':12 'oder':6C 'oomph':4B,10 'pflicht':7C 'wahrheit':5C 'weinst':3A 'wenn':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'german', 'industrial', 'metal', 'rock']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620311077.1456687  (2021-05-06 16:24:37)
                             'size'  6550947