======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '172'
                                          'artist'  'Vorschlaghammer'
                                     'text_people'  ''
                                         'release'  'Lehrlinge zusammenhalten'
                                           'title'  'Ballade von den boesen Lehrlingen'
                                           'quals'  ("['Q-JZFKS-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['krautrock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  '17'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '134.914'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000068 00000078 00000194'
'COMM:iTunNORM:eng'                                 (' 00000068 00000078 00000194 00000193 0001D4EE 0001D4EE 00002684 000025FD '
 '000111B5 0000EA60')
'TALB' (Album/Movie/Show title)                     'Lehrlinge zusammenhalten'
'TBPM' (BPM (beats per minute))                     '134.914'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         'Ballade von den boesen Lehrlingen'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Vorschlaghammer'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '04/17'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:date'                                         '1969'
'TXXX:lastfmtags'                                   'krautrock'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.686639'

========================== row from database ==========================
                                              'id'  1390331
                                            'path'  /data/Music/Bulk/00localcharacter/Lehrlinge halten zusammen [Apprentices stick together]/04_-_Vorschlaghammer_-_Ballade_von_den_boesen_Lehrlingen.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  172
                                           'genre'  loc-unsorted
                                        'filesize'  4573810
                                           'mtime'  1620401178
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter [Apprentices stick together] 04_ _Vorschlaghammer_ _Ballade_von_den_boesen_Lehrlingen loc unsorted
                                      'tag_artist'  Vorschlaghammer
                                     'tag_release'  Lehrlinge zusammenhalten
                                       'tag_title'  Ballade von den boesen Lehrlingen
                                             'bpm'  134.914
                                    'search_title'  'ballade':1 'boesen':4 'den':3 'lehrlingen':5 'von':2
                                   'search_artist'  'vorschlaghammer':1
                                  'search_release'  'lehrlinge':1 'zusammenhalten':2
                                     'search_rest'  '04':6 'apprentices':1,2 'ballade':8 'boesen':11 'den':10 'lehrlingen':12 'loc':13 'stick':3 'together':4,5 'unsorted':14 'von':9 'vorschlaghammer':7
                                    'search_combo'  '04':14 'apprentices':9,10 'ballade':1A,16 'boesen':4A,19 'den':3A,18 'lehrlinge':7C 'lehrlingen':5A,20 'loc':21 'stick':11 'together':12,13 'unsorted':22 'von':2A,17 'vorschlaghammer':6B,15 'zusammenhalten':8C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['krautrock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620401177.5285006  (2021-05-07 17:26:17)
                             'size'  4573810