======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '86'
                                          'artist'  'Bibi Blocksberg'
                                     'text_people'  ''
                                         'release'  'Lieder für kleine Hexen'
                                           'title'  'Kleiner Schelm Bist Du'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['kinder', 'hörspiel', 'hoerspiel']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'loc-eur-germany;set-th-childrensmusic or educational'
                                             'bpm'  '102.230'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lieder für kleine Hexen'
'TBPM' (BPM (beats per minute))                     '102.230'
'TCON' (Content type, a.k.a. Genre)                 ['loc-eur-germany', 'set-th-childrensmusic or educational']
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Kleiner Schelm Bist Du'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bibi Blocksberg'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['kinder', 'hörspiel', 'hoerspiel']
'TXXX:other'                                        'kleiner schelm bist du'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.06 dB'
'TXXX:replaygain_track_peak'                        '0.633477'
'TXXX:tracknum'                                     '07'

========================== row from database ==========================
                                              'id'  1490918
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00german/Bibi Blocksberg - Freche Lieder für kleine Hexen/bibi blocksberg - 07 - kleiner schelm bist du.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  86
                                           'genre'  loc-eur-germany;set-th-childrensmusic or educational
                                        'filesize'  1045403
                                           'mtime'  1620526456
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00german Freche bibi blocksberg 07 kleiner schelm bist du eur germany;set th childrensmusic or educational
                                      'tag_artist'  Bibi Blocksberg
                                     'tag_release'  Lieder für kleine Hexen
                                       'tag_title'  Kleiner Schelm Bist Du
                                             'bpm'  102.23
                                    'search_title'  'bist':3 'du':4 'kleiner':1 'schelm':2
                                   'search_artist'  'bibi':1 'blocksberg':2
                                  'search_release'  'fur':2,3 'hexen':5 'kleine':4 'lieder':1
                                     'search_rest'  '00german':4 '00mid':1 'bibi':6 'bist':10 'blocksberg':7 'childrensmusic':18 'du':11 'educational':20 'eur':12 'europe':3 'freche':5 'germany':13,15 'kleiner':8 'north':2 'or':19 'schelm':9 'set':14,16 'th':17
                                    'search_combo'  '00german':15 '00mid':12 'bibi':5B,17 'bist':3A,21 'blocksberg':6B,18 'childrensmusic':29 'du':4A,22 'educational':31 'eur':23 'europe':14 'freche':16 'fur':8C,9C 'germany':24,26 'hexen':11C 'kleine':10C 'kleiner':1A,19 'lieder':7C 'north':13 'or':30 'schelm':2A,20 'set':25,27 'th':28
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['kinder', 'hörspiel', 'hoerspiel']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526456.1966193  (2021-05-09 04:14:16)
                             'size'  1045403