======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '261'
                                          'artist'  'Letzte Instanz'
                                     'text_people'  ''
                                         'release'  'Kalter Glanz'
                                           'title'  'Das Schönste Lied der Welt'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'folk metal', 'gothic', 'folk', 'gothic metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-folk'
                                             'bpm'  '103.6'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Kalter Glanz'
'TBPM' (BPM (beats per minute))                     '103.6'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-folk'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Das Schönste Lied der Welt'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Letzte Instanz'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['german', 'folk metal', 'gothic', 'folk', 'gothic metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.89 dB'
'TXXX:replaygain_track_peak'                        '0.321376'

========================== row from database ==========================
                                              'id'  1474092
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Letzte Instanz/Kalter Glanz/07-Das Sch_nste Lied der Welt.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  261
                                           'genre'  eid-metal-folk
                                        'filesize'  6281109
                                           'mtime'  1620301707
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 07 Sch_nste eid metal folk
                                      'tag_artist'  Letzte Instanz
                                     'tag_release'  Kalter Glanz
                                       'tag_title'  Das Schönste Lied der Welt
                                             'bpm'  103.6
                                    'search_title'  'das':1 'der':5 'lied':4 'schonste':2,3 'welt':6
                                   'search_artist'  'instanz':2 'letzte':1
                                  'search_release'  'glanz':2 'kalter':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':5 'folk':7 'metal':6 'nste':4 'sch':3
                                    'search_combo'  '00dwimp':11 '00metal':12 'das':1A 'der':5A 'eid':15 'folk':17 'glanz':10C 'instanz':8B 'kalter':9C 'letzte':7B 'lied':4A 'metal':16 'nste':14 'sch':13 'schonste':2A,3A 'welt':6A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['german', 'folk metal', 'gothic', 'folk', 'gothic metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301706.6741416  (2021-05-06 13:48:26)
                             'size'  6281109